This has all the new missions,characters etc and is coming out February 27th a week before the game.Penguin press is doing this game guide this time.Bradygames or Prima isn't doing it but it's a signature guide.
No, I've already completed it on the PS2 & also I think they spoil my enjoyment of the game somewhat. I found the game was pretty intuitive anyway & there's not much you couldn't work out by yourself. If I get really stuck, to the point where I don't want to play anymore because it's so frustrating, then I'll just look on Gamefaqs.
You practically don't need it. And for the English class, the answers can be found on Gamefaqs. There is a class FAQ on the PS2 version's FAQ page, i just used that for the few i couldn't figure out. In my opinion i'd say don't waste your money.