[jtr]

Phydaux, I think there's been some confusion here. You seem to be referring to "Theory of Poker" when the OP was asking about "NL Hold'em Theory and Practice", the recent book by Sklansky and Miller.

And OP, if you can only buy one of the two books you mention, buy the Flynn, Mehta and Miller one. Then win some money and buy the other book with your profits, and you'll see why people are recommending PNL.