Book recommendations while waiting to build up capital

[Roshan K.]

Hello BP, what are your book recommendations? 

It doesn't have to be real estate if it's a really good book that will help out in some other way.

In the past couple months I've read "The book on investing in real estate with no and low money down", "Buy it, rent it, profit!", and of course "Rich dad, Poor Dad", but looking for more recommendations.  Edit: I have also read the Beginner's Guide to Real Estate Investing on BP!

Thanks!
Roshan