Revit - Weekly tip - What is category, family and type?

In this weekly tip I am talking about hierarchy in Revit. What is a Category, a Family or a Type.
Licence:
The video shows the version 2020 of Revit® and it is used exclusively for educational purposes.
Autodesk screen shots reprinted courtesy of Autodesk, Inc.
The narration and all the illustrations were created by CAD in Black.

[@oswald2358]

Crisp and concise 👍

[@bimstrategy7560]

thanks

[@kutulloinnocentmoropane502]

Can you do a video with more details on modifying wall and types of materials