The main difference with Windows 10, which is first visible to the user, is the renewed visual appearance.
All applications and settings can be found by clicking Start menu at the bottom center of the screen.
The most common basic programs are pinned directly to the start view of the Start menu. Rest of applications can be found under All apps > button in the upper right corner.
You can pin your favorite app to the Start menu by right-clicking on it and selecting Pin to Start.
Logging out of Windows is done by clicking on the personal picture/name button in the lower left corner of the start screen of the Start menu.
See more instructions about How to sign out
From Intranet you can find info about Eduhouse e-learning service that offers also several online training videos about Windows 11. Use “Windows 11” as a search word.