Organization of the corporate network. Spreading the Internet around the educational institution

Organization and configuration of the Internet. Setting up the corporate network of an educational organization. Internet coverage of a large building, almost without the use of LAN wires (twisted pair). We use wi-fi points, as I did!
Setting up windows 7, 8, 10, linux (ubuntu), smartphone, tablet for a corporate network.
How to set up the Internet via a router (modem) with static ip addresses, as well as a proxy server, setting up tp-link archer routers, setting up computers, how to connect a phone, an Android tablet to a corporate network and many other important questions!