All of the guidebooks suck. True, they can be useful, but they are always incomplete. Why spend $20 for partial help when you can go online and learn (for the most part) everything you need to know and more.

And Rengori has a good point. The worst part about using a walkthrough is that it can't help spoiling some of the game (even the so-called "spoiler free" guides).

This is why I have decided to buy a notebook for FFXII. I'll accumulate whatever info I need to know on subsequent playthroughs. I'm sure it will take some effort to find everything, but it's more rewarding that way.