Unity resources or books for programmers?

Question

Unity

I decided to brighten up my leisure time by learning Unity.
I dug into the materials, almost everyone does the aspect of learning C #, which I already know. Moreover, what is most annoying is that they start with the basics (what is a variable, method, class, etc.).
I need to understand the platform itself more than the aspects of programming.
I don’t perceive video tutorials from the word “completely” (I don’t know who invented it at all), so the question is whether there are tutorials / books on Unity written for those who already know how to program and want to learn the platform itself.
Well, or at least those where the double-click guide is reduced to a minimum.
The language can be either English or Russian.

Answer 1

give yourself a task. Let's say Tetris.
And start doing.
In the process, a lot of questions will arise.
You look for answers, you try, you comprehend.
When you master the basics, you will understand where to go next.

Answer 2

The main resources are:
You can also try courses not for programmers, that is, where there is no programming, and all the code in the assignments comes in the form of ready-made files that you just need to connect. I don’t know if there are many of them, but in any case, you can find out from the course organizers.