Many players are lazy and want a cookie cutter NL book that walks them through the play of every hand and every possible variation of play the could arise from preflop to river. To attempt this type of book would be a disaster as most NL hands really do "depend".
Many of us cut our teeth on limit. We have the concepts of solid limit play ingrained in our minds, and, as such, we would like to have a NL cookbook. I am not a great player, but I am smart enough to know that if you try to play NL with a set list of rules and plays, the better players will eventually adjust and take your money.
Cliff Notes:
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