I got the strategy guide for san andreas just because there is so much shit to do in that game, and the maps on the internet blow when it comes to finding the hidden items..
I don't usually use GameFaqs, unless I'm really stuck.
San Andreas was the first strategy guide I had gotten since I was a kid.. I used to get them when N64 first came out.. I never really used them, though.. Certain parts of the Water Dungeon I used in Zelda.