i came across this site while looking for info on the spells in gothic 2. its a really good database of pretty much everything you need to know about the games, and also has a very brief walkthrough that just tells you who to talk to in each chapter and where to get items like rune stones and so on.
i think i can post the link as i don't think it contains any forums or anything like that so here it is:
http://www.mondgesaenge.de/G2DB/EN/