[*TT*]

Small Stakes Hold'em is a book that teaches you how to adjust your action in multi-way pots, and against loose and passive players. It also discusses agressive players, tight players, and everything in between - think of it as a its a book about adjusting to player types and table texture, a key skill necessary to be a winning player. It is primarily a post flop book, if you spend your time getting caught up on the pre-flop recommendations then your not understanding the concepts presented within it's pages - money is made in multi-way pots after the flop, and loose and passive games make the games potentially much more profitable (although you must ride through the high varience that will occur when multiple opponents are showdown bound).

So the short answer is the post flop concepts still apply, but if you use the pre-flop charts when the pots are multi-way, and adjust accordingly when the pots tend to be 2-4 players then Small Stakes Hold'em really will be the only book you will need at this stage for the levels you play at.