What is TCP/IP?

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  • čas přidán 31. 05. 2024
  • Many of us have seen mysterious "TCP/IP options" in our network settings, but what is TCP/IP, and how does it enable the Internet to operate as it does?
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Komentáře • 867

  • @NateHancock
    @NateHancock Před 8 lety +2630

    I would tell you all a funny UDP joke but you may not get it.

    • @NateHancock
      @NateHancock Před 8 lety +572

      Ill tell you a funny TCP joke. Did you get it? Did you get it? Did you get it?

    • @admin7667
      @admin7667 Před 8 lety +28

      lol good one

    • @ExternetEx
      @ExternetEx Před 8 lety +89

      I could tell you a good UDP joke but i'm getting flooded with jokes from random people right now.

    • @GMoneyGonz
      @GMoneyGonz Před 8 lety +6

      Hahahaha! Awesome!

    • @tomeramir6057
      @tomeramir6057 Před 8 lety +32

      I would tell you a udp joke, but jumbled it might get

  • @WilliamBoothClibborn
    @WilliamBoothClibborn Před 8 lety +714

    I kindly request that you don't stop this series to allow me to procrastinate computer science work while I am leaning computer science.

    • @wesleymercer4536
      @wesleymercer4536 Před 4 lety +10

      Same dude same

    • @nathanwilliams770
      @nathanwilliams770 Před 4 lety +3

      #relatable

    • @charlieosko4151
      @charlieosko4151 Před 4 lety +4

      3 years later and this comment is still relevant!

    • @vulpritprooze
      @vulpritprooze Před 4 lety +11

      @@charlieosko4151 Of course. AI hasn't taken over yet, so we still need to learn Computer Science.

    • @novaii3724
      @novaii3724 Před 3 lety +7

      4 years later will and I'm following in your footsteps.

  • @_Super_Hans_
    @_Super_Hans_ Před 8 lety +608

    It's amazing that I can press a button on a controller, the signal goes through my computer, through my house and country and across the world and be decoded by someone else's computer in less time than I can even blink.

    • @clintross7778
      @clintross7778 Před 8 lety +5

      agreed

    • @honda8770
      @honda8770 Před 8 lety +28

      You should look into processors. the more I learn about then the more it blows my mind

    • @Dan-we2kg
      @Dan-we2kg Před 8 lety +1

      +_ Skylake _ fuck off m8, Haswell-E.master race

    • @honda8770
      @honda8770 Před 8 lety +1

      +Halfs Pro Sandy/ivy bridge master race, tbh

    • @jeremycrocker2524
      @jeremycrocker2524 Před 8 lety +30

      And by then you've already been stabbed in the face by a 12 year old talking about your mom.

  • @klm6674
    @klm6674 Před 8 lety +487

    1:26
    Correction:
    SMTP is not used to check email. SMTP is ONLY used for the purpose of sending and receiving email messages to and from a server.
    The protocols you would use to *check* your email are POP (Post office protocol) or IMAP (internet message access protocol)

    • @unvergebeneid
      @unvergebeneid Před 8 lety +24

      The "receiving" in your statement is still confusing IHMO but yeah, I was going to say this: from an end-user perspective, SMTP is used to send emails, period. It's also used between mail servers. Receiving is done with IMAP or POP3 if you're on a 90s retro trip.

    • @ubertom3011
      @ubertom3011 Před 8 lety

      i still use pop, maybe that makes me retro but i think the fact i still use a seperate email client as opposed to a web based dealio makes me far more passé than any protocol ever could.

    • @unvergebeneid
      @unvergebeneid Před 8 lety

      Tom Johnston Nah, I hate web-based dealios. OTOH, POP3 is just impractical as soon as you're using more than one machine to check your mails.

    • @unvergebeneid
      @unvergebeneid Před 8 lety +1

      ***** Not really :)

    • @kaceyhowell6570
      @kaceyhowell6570 Před 8 lety +1

      That is why IMAP became a thing, that way it stays on the server and just syncs it to your email client.

  • @JonasNielsenjlndk
    @JonasNielsenjlndk Před 8 lety +1469

    Hello, would you like to hear a TCP joke?
    Yes, I'd like to hear a TCP joke.
    OK, I'll tell you a TCP joke.
    OK, I'll hear a TCP joke.
    Are you ready to hear a TCP joke?
    Yes, I am ready to hear a TCP joke.
    OK, I'm about to send the TCP joke. It will last 10 seconds, it has two characters, it does not have a setting, it ends with a punchline.
    OK, I'm ready to hear the TCP joke that will last 10 seconds, has two characters, does not have a setting and will end with a punchline.
    I'm sorry, your connection has timed out... ...Hello, would you like to hear a TCP joke?

    • @parabolicpanorama
      @parabolicpanorama Před 8 lety +5

      Perfect!

    • @Yemto
      @Yemto Před 8 lety +111

      I can tell you a TCP joke, but then I have to repeat it until you get it.

    • @Highflyer25800
      @Highflyer25800 Před 8 lety +30

      Could you do a UDP joke?

    • @Yemto
      @Yemto Před 8 lety +106

      W B-H I could, but you might not get it.

    • @ralmslb
      @ralmslb Před 8 lety +6

      UDP would be spam lol

  • @kateniaallen8670
    @kateniaallen8670 Před 3 měsíci +6

    We have been studying TCP/IP for two weeks in class now. You explained it better in 7 minutes than our tech book has taken 2 chapters to explain! Thank you for breaking it down into simple to understand English!

    • @user-jn3ce8sw1v
      @user-jn3ce8sw1v Před 2 měsíci

      I agree. but is this channel still active

    • @mattc9598
      @mattc9598 Před měsícem

      This video is outdated now, the new 5 layer model is preferred going forward.

  • @steevemccloud5841
    @steevemccloud5841 Před 8 lety +631

    How babies are made As Fast As Possible

    • @AdaptFPV
      @AdaptFPV Před 8 lety

      haha

    • @wthilmi
      @wthilmi Před 8 lety +7

      Fuck in da butt

    • @sammymorini9748
      @sammymorini9748 Před 8 lety +18

      Linus + Asian = efficient baby making production "line" lol :P

    • @JackLe1127
      @JackLe1127 Před 8 lety +13

      when mommy linus and daddy linus love each other very very much...

    • @spudmuffin3000
      @spudmuffin3000 Před 8 lety +11

      It's me, 2 minutes or less, guaranteed. Satisfaction..not guaranteed.

  • @chris210
    @chris210 Před 8 lety +180

    is "damn it Taran" becoming the "shut up Meg" of LTT?

    • @OzcarMtl
      @OzcarMtl Před 8 lety +6

      Taran*

    • @chris210
      @chris210 Před 8 lety

      sorted it's fixed, until I forget and spell it wrong again

    • @mika2666
      @mika2666 Před 8 lety +6

      "damn it colton" is pretty popular on the wan show :P

    • @chris210
      @chris210 Před 8 lety

      too true lol

    • @CheffBryan
      @CheffBryan Před 8 lety +4

      "Shut the fuck up, Donny!"

  • @pewpewnim
    @pewpewnim Před 8 lety +152

    6minute video that explained TCP/IP and ports better than my classes in school that i pay thousands for. smh.

    • @hamzix6599
      @hamzix6599 Před 4 lety +15

      this vid is just a simplified version of tcp you need much more detailes than this

    • @THW69
      @THW69 Před 4 lety +1

      true

    • @AMRMICX2
      @AMRMICX2 Před 3 lety +1

      Same here 😹🤘

    • @_________________404
      @_________________404 Před 3 lety +2

      He's explaining only how the TCP/IP model works, ISO/OSI model is what you learn most of the time, like in cisco networking essentials, etc. Because the ISO/OSI model is more detailed.

  • @dmeagher101
    @dmeagher101 Před 7 lety +64

    I had to write an implementation of TCP for a networks class in college. Man, it may sound simple here, but when you get into the nitty gritty of actually making these systems work, it sure is complicated.

  • @gentleeyes
    @gentleeyes Před 6 lety +64

    Your explanations are so clear and I do not think the jokes break up the flow at all. You really keep my attention while I'm prepping for interviews and trying to identify any knowledge gaps. Thank you!!

  • @pt595
    @pt595 Před 5 lety +5

    Ok, I just stumbled upon this, I have seen thousands of youtube presentations and you are absolutely superlative! It was quick(a plus for my ADD), concise, relevant, fun (w/o being too goofy or silly) and seemless. Thank you very much, you have an outstanding talent I hope you continue posting.

  • @seanc.5310
    @seanc.5310 Před 8 lety +8

    This one is well done. I have dealt in detail with packet switching and the 7 layer model while in college, this was a good visual and simplified explanation. I know the point is to be quick but my only suggestion would be to include NAT also.

    • @MichielvanderBlonk
      @MichielvanderBlonk Před 8 lety +2

      well that should go in 'routers as fast as possible' or 'IP addresses as fast as possible'

  • @temidayoabayomi-zannu8164

    Thank you Linus, I just started the ccna certification course so this was very helpful.

  • @filipkralj2618
    @filipkralj2618 Před 8 lety +13

    awkward moment when internet is much more organized than your life

  • @blakeh7967
    @blakeh7967 Před 7 lety +7

    I wish this was around when I was learning TCP/IP... Thanks Linus, I can now point other lost souls to this video.

  • @BrownieX001
    @BrownieX001 Před 8 lety +1

    So revisiting old topics with new fancy graphics! I have been waiting for these.

  • @sneakysync4940
    @sneakysync4940 Před 3 lety +3

    Didnt understand this after a two hour lecture but my man linus explains it in 6 mins what a legend

  • @misssusie2112
    @misssusie2112 Před 5 lety +2

    Thanks for explaining things in a manner a non-computer person can understand. Well worth the watch.

    • @RealNFVlogs
      @RealNFVlogs Před rokem

      Hi do you know any more resources information like this to learn computing because i’m kinda dumb at this

  • @muhammadabdullahalmamun7774

    I spent so many hours by watching videos on TCP/IP but couldn't understand. At last, this 6 minutes video made me understood 100%....

  • @TheHoaxHotel
    @TheHoaxHotel Před 8 lety +73

    Rabbit ears, those were the good old day.

  • @DMast
    @DMast Před 8 lety +458

    Just my humble opinion, but I think that jokes shouldn't bring the flow to a jarring halt. I appreciated the packet jokes, but they really broke the flow of the video.

    • @BigStipowski
      @BigStipowski Před 8 lety +14

      agreed!

    • @Mr.FastZombie
      @Mr.FastZombie Před 8 lety +60

      No, Linus is just a serial killer. Those aren't jokes.

    • @aidanmcenaney6360
      @aidanmcenaney6360 Před 8 lety +5

      those weren't jokes...

    • @valdezapg
      @valdezapg Před 8 lety +21

      I too think the videos would be better without cheap unfunny jokes and stupid sounds and animations.

    • @Cheejyg
      @Cheejyg Před 6 lety +4

      2:11 really broke the flow for me lol

  • @danielstromberg
    @danielstromberg Před 5 lety +4

    Actually, low-numbered ports like http (tcp/80) and smtp (tcp/25) are _destination_ ports. They don't describe where things are coming from. For that we have _source_ ports, which tend to change from connection to connection.

  • @robbieturtle6218
    @robbieturtle6218 Před 2 lety +1

    I didn't expect Linus to be saving me in my Concepts of Parallel and Distributed Systems class lmao

  • @Ayokalyb
    @Ayokalyb Před 8 lety

    Dude... Please tell me this whole thing was an ad. The way you tied that in at the end was ingenious.

  • @ComfortMgalulaMackwelliNC

    I like how you summarize all the Vital information.... NICE

  • @rousseld.nzoyem8105
    @rousseld.nzoyem8105 Před 6 lety

    OMG!!! I feel like I could pass my Communications and Networking course with this video alone!! THANKS LINUS....

  • @civic626
    @civic626 Před 6 lety +3

    So seriously. Thank you for explaining that in that way. You're literally the only person I've seen break it down in a non text book way. Oh yeah, I just subscribed.

  • @manal7243
    @manal7243 Před 5 lety

    Amazing i love it, like finally i understand it.. yesterday i was crying because i can’t understand what tcp/ip protocol is and now i’m crying because it’s so easy!!
    Really thank you!

  • @Swermie
    @Swermie Před 6 lety

    learning this right now in my networking class, and I have to explain it. Thanks for the good video. Much better than the provided class material.

  • @LeylaHunn
    @LeylaHunn Před 3 lety

    As somebody who needs to be able to learn and recite this entire process by tomorrow I've never felt so happy to see an advert finally appear to signify the end of the video

  • @alexgreen1913
    @alexgreen1913 Před 5 lety

    Thank you for this video. Right now I'm learning about IT and this video is waaaay more entertaining than what I'm used to seeing.

    • @ransi_07
      @ransi_07 Před 2 lety

      @Alex Green
      Heyyy!
      Any updates about you now that you would like to share?
      Would love to hear!

  • @AviatorMage
    @AviatorMage Před rokem

    Coming back to this after starting a Networking IT degree....man, I remember the Tunnelbear debacle a few years back.

  • @jasonprevo2161
    @jasonprevo2161 Před 5 lety +2

    I think the OSI model offers a more clear picture to beginners... All People Seem To Need Data Processing
    Application layer 7 (allows for communication to programs)
    Presentation layer 6 (formats)
    Session layer 5 (NetBIOS)
    Transport layer 4 (TCP / UDP) Segments
    Network layer 3 (internet / IP) Packets
    Data line layer 2 (LLC / MAC) Frames
    Physical layer 1 (Cables) Bits

    • @rasaqcontinuity2922
      @rasaqcontinuity2922 Před 4 měsíci

      It shows you understand this far better than I do, can you hp me out in my beggingner level. ?

  • @gwgux
    @gwgux Před 7 lety +1

    They should do a video on RFC specifications. The guidelines that allow different computers and hardware to interact with each other successfully.

  • @oliveranderson7962
    @oliveranderson7962 Před 5 měsíci

    the most comprehensive TCP/IP video I've seen yet!
    Thank you a lot!

  • @saadwazir
    @saadwazir Před 8 lety

    THE BEST EXPLANATION OF TCP/IP FOR BEGINNERS I USED THIS VIDEO TO TEACH MY STUDENTS THANKS BROTHER.

  • @steva7159
    @steva7159 Před 8 lety

    so cool to see this linus explaining,we were learning osi model like 5 months ago :)

  • @SuperKhezar
    @SuperKhezar Před 8 lety +3

    if only this video was released before my computer science exam. :'D

  • @CallOfRadio
    @CallOfRadio Před 7 lety

    sometimes linus techquickie is explaining things better and easier then my teachers at school. (i live in germany and do a vocational training in IT)

  • @IrocZIV
    @IrocZIV Před 2 lety +2

    Linus really has improved his delivery since back then.

  • @dawnzac
    @dawnzac Před 3 lety

    OMG Linus, we need more videos like these. It's so helpful as I've got sem exam Tomorrow 😂😂❤

  • @GordosTacoShop
    @GordosTacoShop Před 3 lety

    I'm studying for my A+, and this helped quite a bit. Thanks!

  • @kianooshmashayekhi2829

    Thank you a a lot . that was really educational . I finally got concept behind . using simple and layer to layer description really helped .

  • @trevorreedstudios
    @trevorreedstudios Před 8 lety

    Excellent informative video. Like so many of the others your have made. Brilliant. Keep up the good work. Cheers Man.

  • @coltongruss8965
    @coltongruss8965 Před 4 lety

    i like this a lot. it was funny,easy to understand, and quick. wish all instructional videos were like this one.

  • @minhhoang4612
    @minhhoang4612 Před rokem

    Every colleges and universities should incoperate these videos into their lectures

  • @chiragsharma6215
    @chiragsharma6215 Před 3 lety +1

    I couldn't think of a better way of explaining tcp/ip

  • @SamScottVlogs
    @SamScottVlogs Před 8 lety +2

    Do more videos about TCP Layers and switching!

  • @colleensdan
    @colleensdan Před 6 lety

    I think you've just saved my computer science exam. Thank you!!!

  • @johnnyfrancisco4
    @johnnyfrancisco4 Před 8 lety

    Something for learn everyday :)
    Techquickie is just the best!
    Linus to the top!!!

  • @thatroarboi2788
    @thatroarboi2788 Před 8 lety

    omg i remember this lesson from my cisco networking academy class i took in highschool!! this brought me back to them good old days. gosh i miss high school, but better booty in college ;)

  • @livesoko
    @livesoko Před 5 lety

    Awesome!! I have never had so much fun learning before.

  • @figgyjose
    @figgyjose Před 7 lety

    You guys do a great job with informative tech-things!!! Just Subscribed. Thank you.

  • @Many_Mirrors
    @Many_Mirrors Před 7 lety +15

    So this school year we were studying these layers. And I've just learned more in a 5 minute video than in a whole fkn year. THX SCHOOL

    • @THW69
      @THW69 Před 4 lety

      yeeh me too

  • @kodkid
    @kodkid Před 6 lety

    This was perfect for me.. This video worked great with my learning style.

  • @TechXSoftware
    @TechXSoftware Před 8 lety

    Dude, I had learn so much about this in CCNA 1 haha, also had to do OSI layer.

  • @steliospasiardes678
    @steliospasiardes678 Před 8 lety

    Thanks to Cisco subject I took in high school, i've already known this. Good video for a refresh though :)

  • @shashikantt
    @shashikantt Před 8 lety +10

    2:38 - Rx480 overclock on stock cooler linus
    Hints .............

  • @Jonten00
    @Jonten00 Před 8 lety +1

    the 1.5 ghz on stock cooler meme actually made me laugh out loud

  • @MichaelRooplall
    @MichaelRooplall Před 8 lety +1

    The little under your breathe "Damn it Taran" seemed so legit, thought you were legitimately just tired of him for a second there.

  • @luca-pk5kr
    @luca-pk5kr Před 8 lety

    small correction: What in the video is called "internet layer" is actually the network layer, while the network layer described in the video is the data link layer.

  • @IamPlainLazy11
    @IamPlainLazy11 Před 7 lety

    Just used this to recap for my GCSE Computing exam tomorrow since I actually like Linus as oppose to any other educational channels. :)

  • @MrThetruthdotcom
    @MrThetruthdotcom Před 4 lety

    Great explanation ! Made sense, keep up the great content!

  • @serendipitybyosmith7263
    @serendipitybyosmith7263 Před rokem +1

    Yo, he's definitely the go to guy. too bad this is from 2016. But I appreciate all the good info.

  • @frostyhotcocoa7809
    @frostyhotcocoa7809 Před 2 lety +1

    Linus can explain concepts in less than 8 minutes while my professor explain half of it in 90 minutes

  • @zekkoukyo
    @zekkoukyo Před 8 lety

    I think I can sit for CCNA already by this LOL Linus could really be a good lecturer imo

  • @rishabhverma9135
    @rishabhverma9135 Před 7 lety

    Great Explanation man, and the punches though :D

  • @davidlee588
    @davidlee588 Před rokem

    super good, need more in-depth follow-up on tcp/ip

  • @TheSmartOjus
    @TheSmartOjus Před 3 lety +1

    Very informative and thank you for the funny jokes in the middle! To all my emanagement students, I wish you the best of luck on Quiz #1! :D

  • @abbey485
    @abbey485 Před 2 lety +1

    Thank you for making this easier to understand you are appreciated

  • @tymothylim6550
    @tymothylim6550 Před 2 lety

    Thank you very much for your video! Really clear and helpful!

  • @anonygsc6851
    @anonygsc6851 Před 6 lety

    I keep coming back to these

  • @AKHILPOKLE
    @AKHILPOKLE Před 7 lety

    thnx linus passed my exams with this simple explanation

  • @Ryze001
    @Ryze001 Před 8 lety

    Good stuff, as always!! keep up the good work :)

  • @cloud8639
    @cloud8639 Před 3 lety

    this is one of those 5 min video explains things better than a 50 min lecture

  • @konataizumi5258
    @konataizumi5258 Před 6 lety

    for receiving email IMAP/POP3 - SMTP for sending and transport ... TCP has not bigger latency but ... it is not designed to use packets on top of it (OpenVPN TCPvsUDP) ... HTTP only uses port 80 by default (hxxp://:) ... error checking is also in UDP (also protocols in 2 Layer) ... TCP only provides nice stream capability (like data connection in FTP) and API of BSD sockets (used also in windows) are very similar to file operations (recv/send family for UDP packets, for TCP read/write can be used)

  • @mvenhleshikovha
    @mvenhleshikovha Před 5 lety

    Thanks for the video
    It was really helpful

  • @doloreslaflipoflopo2746

    you are the saver of a CS student mate... well done...

  • @robertrodriguez7011
    @robertrodriguez7011 Před 5 lety

    Awesome explanation. Thanks!

  • @yamika.
    @yamika. Před 4 lety

    thank you, this video cleared things up quite a lot

  • @ryanschafer9034
    @ryanschafer9034 Před 8 lety

    i like this easy way to understand the TCP/IP stack but you should have noted the existence of the OSI model

  • @timba271
    @timba271 Před 8 lety +1

    that RX 480 ... 1.5 GHz Overclocking reference ;) well played Linus, well played

  • @beep_69
    @beep_69 Před 6 lety

    You are the best man saved some time during exam period

  • @karma_yogi_42
    @karma_yogi_42 Před 3 lety +1

    what the ffff! linus actually helped in my studies! this was useful in my education!
    linus of all people

  • @VideosofRC
    @VideosofRC Před 7 lety +4

    HTTP doesn't have to use port 80, for example port 8080 isn't that rare and you could set it to be even something like port 1337

    • @anwarahmed5342
      @anwarahmed5342 Před 7 lety

      Number of Ports are 65,535 ports, from 1-1023 are known as Reserved ports which means they are reserved for certain apps or programs and cannot be used as a normal communication ports, from 1024-65,535 are known as Unreserved ports, and you can use for your end devices. Now for e.g., port 80 is only for HTTP, 443 is for HTTPS (Secure browser), FTP uses port 20/21, SMTP uses 25 , telnet 23 so on and so forth. Assume that you have many devices in your home network, and you want to prevent some users from browsing the internet, all you have to do is go to the firewall in your PC or Access point (router) and assign a port for your PC, let us say port 1025 ,followed by the mac address of the device, then choose Deny access to port 80, which is HTTP.

  • @ricardoam5876
    @ricardoam5876 Před 6 lety

    It is the most clear explanation that I heard.

  • @vivekdesai8500
    @vivekdesai8500 Před 7 lety

    Thank you! It was very clear!

  • @mrchi6611
    @mrchi6611 Před 3 lety

    Lol. Got me at the chops it off in little chunks and dispose in lake part.

  • @jiminsgiggle5127
    @jiminsgiggle5127 Před 7 lety

    watched the other videos on tcp/ip model but i cant understand their explanation well, com across this, understand in one time watch. thanks!

  • @GoldenKingStudio
    @GoldenKingStudio Před 8 lety

    Set top boxes/TV tuners explained? It would be particularly relevant with the big US FCC debates going on around them.

  • @ndavlantis93
    @ndavlantis93 Před 8 lety

    TCP/IP are like onions. Onions have layers, TCP/IP has layers. You get it, they both have layers

  • @rolandradoci1010
    @rolandradoci1010 Před 4 lety

    Thank you for the video it helpd in my exam a lot.

  • @HT-rr9ww
    @HT-rr9ww Před 2 lety

    cant wait to comment before I run this video over, amazing work! especially the sandwich part!

  • @SafiMajid
    @SafiMajid Před 8 lety +28

    is that meme a RX480 reference

    • @EDIIIZ
      @EDIIIZ Před 8 lety +2

      100% 😂

    • @brandvester
      @brandvester Před 8 lety +4

      most definitely

    • @xxcalyburTEK
      @xxcalyburTEK Před 8 lety +2

      Hidden leak to avoid breaking NDA, I think.

    • @SuppleAloe64
      @SuppleAloe64 Před 8 lety +2

      Could also be he's just using it as an example of a recent meme (where the soon-to-be-released RX 480 was rumored to hit 1.5GHz overclocked by a source that seems to be churning out all sorts of controversial claims), and it doesn't actually mean anything. This video was probably made pretty quickly, and whoever procured the image probably had that on his/her mind and used it as a relevant joke/reference/shot. That's my guess, at least.

    • @xxcalyburTEK
      @xxcalyburTEK Před 8 lety +2

      +Moop Entirely possible

  • @mitrubatchist3249
    @mitrubatchist3249 Před 6 lety

    good and clear explanation, great vid thanks :)

  • @Maria-jp7um
    @Maria-jp7um Před 3 lety

    Great video and explanation! Thank you

  • @wasirhuzaifa89
    @wasirhuzaifa89 Před 4 lety

    from the core of my heart
    thank u

  • @ManojKMathew
    @ManojKMathew Před 8 lety

    video editing and points was amazing..

  • @djolltax
    @djolltax Před 7 lety

    The more I watch him, the higher his voice gets I swear...
    Jokes aside, a brilliant video, highly useful for my A levels!