Since, there's no book category currently so, I am asking it here. And, It can be moved to that category later. I want to start learning now so, I don't want to wait.

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Which book is best for Classical Mechanics? I have studied Classical Mechanics little bit. But, I want a book which explains theories step by step (It's OK if that book has GR topic). I want that book to prove formulas (theories) step by step. I had studied some book but, those books don't explain theories properly, those books mostly for solving problem. I had completed most of topic in Classical Mechanics (didn't prove theories/equations).

What I have completed :

1. Laws of Motion, 2 dimensional motion.
2. Force
3. Sounds
4. Heat (not completely) (little bit of Thermodynamics).
5. Reflection, Refraction.
6. Special Relativity.
7. General Relativity (I just can explain how Gravity works nothing else).
8. Work
9. Power
10. Electricity.
11. Harmonic Motion

Now, studying Lagrangian mechanism in Goldstein's Classical Mechanics book.

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I was reading Introduction to Classical Mechanics by David Morin, that book was little bit hard to understand. So, I am reading Classical Mechanics by John R. Taylor. It's little bit easy (but not too much).