ToP definately, then after awhile of playing I'd say NLHT&P. Becuase you will understand it better if you have a basis to look at it and be able to filter what applies to what. I'd maybe even read Fees ebook before this and then reread both in succession again.

PNL. Not a fan of in general. Not bad, but nothing great to me. Once your understand STP ratios the book loses me.