Unity programming tutorial?

Question

C++ / C#

Hello.
I recently got into unity. Full of video tutorials.
But I want to find either a book or a series of articles specifically on programming in unity.
The programming language is not important. But I want to know what built-in classes are already in unity, what can be done with objects, etc.

Answer 1

The first thing to advise is the off site Script reference as well as the Russian-language forum unity3d.ru, there are also many lessons on youtube
1) https://docs.unity3d.com/Documentation/ScriptReference/
2) http://www,unity3d .ru
3) www.youtube.com
( www.youtube.com/channel/UCSQwsP1Y3ctN8rH_GEo0pYw )
( www.youtube.com/channel/UCG08EqOAXJk_YXPDsAvReSg )