This is one of the best books on Buffett out there. It reviews in detail several stock investments by Buffett under some essential Buffett's investment tenets such as:
- simple and easy to understand
- determine the value
- trading at a deep discount from intrinsic value
- great management
Etc.

My favorite part of the book is how to value the business according to Buffett

Gran libro para entender la metodología de buffet