[RobNottsUk]

Slotboom's book is interesting for a number of reasons, the attitude to preparation, analysis of rake and blind structures, and looks into how changing stack size alters strategy.

There's nothing to tell you how to play O8 hands, so if you're only interested in your cards and the board, then the books wasted.

You also shouldn't in my view, blindly follow any strategy, even in PLO; the short-strack strategy he pursued is most effective in a particular type of game. Overall the books useful for NLHE cash players, never mind PLO8 players.

There's a lot to be gained from understanding it. You certainly aren't drilled to play some crazy rote method.