How to learn the MVVM and WPF pattern?

Question

WPF

Good afternoon!
I am writing a term paper on the topic "Information System", as it turned out, I wrote it in a worker-peasant style.
Link to Git - https://github.com/MrWaip/LK_Teacher/tree/master/L...
Application - Teacher's personal account.
I wrote it as best I knew and as best I could, I didn’t know about any patterns at the time I started writing.
And then I saw "Strange pamphlet, in green binding", which said: "You write garbage."
And so I began to delve into MVVM in order to rewrite everything correctly. And I ran into a lot of problems.

1. Where can I get the correct and up-to-date literature?
   
2. How to organize the correct navigation using the MVVM pattern? (Change UserControl and pass some parameters to it)
   
3. Is it possible to organize authorization in MVVM, because you need to work with PasswordBox directly.
   
4. Framework Prism, and how to work with it?
   
5. What is "DI", "IoC"?
   

Etc...

Answer 1

https://metanit.com/sharp/wpf/

Answer 2

1. Either here Google or here "Best practice on 1st"
2. See "Best practice on 1st"
3. You need to understand the separation of display logic and data logic.
4. Again almost Google Habr current
5. Google well or Habr 1 Habr 2 Something else