I'd have to agree with Maxx Power, here.

Especially with FFVI. You don't need to do much after about halfway through--you could go all-out and do everything, get everybody, best weapons/armor/Espers/etc., or you could get by with the basics and a couple extra levels. Hell, I've beaten the game with only Celes, Edgar, and Setzer before.

And, as has been pointed out, anything you need to know, you could just come here and find out pretty easily. I'm sure there are plenty of us willing to ramble on about this game.