Books on C# with theory and tasks?

Question

.NET

Good evening. Found several books on C#: Schildt, Troelsen, Richter. There is a theory and no tasks, but I need the book to have a theory and after each chapter a list of tasks for the material covered to consolidate.
I came across this book The C# Programming Language. Lectures and exercises , but I can't find it anywhere in the electronic version. Advise, please, who that knows. Or maybe a course with lectures and exercises.
PS: I'm learning C# for Unity. Before that I studied Python.

Answer 1

Unity Challenges (not a book):
www.unity3dstudent.com/2010/07/challenge-c01-beginner
Unity books all recommend "Unity in Action".