Starting to read poker books

[chawla2890]

So I just bought Super-System 2 and am wondering what I should buy next (won't be reading them till I am done with SS2 tho obv). I can get Phil Gordon's 3-book-set (Green, Blue, and Black) for $38 and I think that's a hella good price...so yeah. Are his books recommended? Also another thought is Theory of Poker by Sklansky.

Oh and I am trying to focus on cash games currently, if that has an effect on what books to read.