Are the old unity books still relevant now?

Question

IT education

I've been learning UNITY not so long ago. Books such as:
"The Art of Scripting in Unity" - 2016,
"Game Optimization in Unity 5" - 2017,
"Animation Basics in Unity" - 2016
became interesting. The only concern is the relevance of these books. They were written under the version 3-4 years ago, has unity programming changed much since then?

Answer 1

Of course, I don’t know about units, but usually books are written in order to explain HOW this is done, and not where to click, but during this time the interface has changed, but the essence has basically remained the same.