Resources to learn c# related to unity only

I am a beginning unity developer and I am looking for materials to learn the game engine. I already know c# throughout, any coding resources I come along with include the c# lessons. I was wondering if you could suggest to me the resources from which I can learn which include only the knowledge about the engine itself and the c# related to the engine only. Books? Official unity courses? Videos?

Unity for software engineers

Cat like Coding clock tutorial

First 13 chapters of Unity 2021 Game Development (Borromeo, 2021)

comp-3 Interactive tutorials on YouTube

Unity Certified Programmer Exam Guide (Walker 2020)

Infallible Code tutorials on YouTube

Learn.unity.com where you can pick topics

There are newer versions of the two books but I haven’t see them yet.

Anything made by Brackeys