Quantum mechanics: the theoretical minimum, first impressions

So far I have read past the first chapter of this book by Leonard Susskind, it is written for theoretical physics undergraduates in mind. Unlike other books I have read on this subject, it contains the mathematical explanations with mathematical formulas and also at the end of the chapter there are exercises for those who want a challenge.

After doing some background research on the author, it appears the book is based on his lectures. I will post more on this later.