Worthless. Everyone I have read while playing an RPG is either full of stupid information to fill space or lacking FUNDAMENTALS to make the game easier:
Case #1: Valkyrie Profile 2 -- While they do cover the bonus hardcore extra dungeon in the game, the guide is lacking in description and tactics near end game. Additionally the very BASIC SPHERE system is ignored when they could be mentioned in key boss battles.
For example one boss battle involved an enemy that regenned 36000 hp. The game suggests I use WEAKEN. Ok wtf spell is WEAKEN. I cant find it on any of my mages, cant find an item that casts it. There IS prismatic missle which causes FRAIL which is what they're imaginary WEAKEN is.
In reality you can simply use the +150% attack No HP Regen Sphere on the dungeon to keep the boss from regenerating entirely! WTF!
Cast #2: Final Fantasy XII -- The guide is HUGE OMG HUGE. The license board poster is great, there's a lot of cool background story n shit, lots of monster charts, weapons crap, and secrets, BUT WHAT ABOUT GETTING THROUGH THE DUNGEONS HUH?!?! God damnit the writers are dispensing information like:
"IF U DONT HAVE ENUFF MONEY! SELL STUFF!"
"EVEN IF U DONT HAFF MONEY BROWSE SHOPS!"
Well shit kids, I better SELL STUFF TO GET MONEY! IF I DONT WANNA DO THAT I CAN "WINDOW SHOP"
Jesus Christ. FAQs have more detail.
