instruction manuals? please read!

okay here is my dilema...

i buy used games from a store (wink), but the game does not come with instruction manuals. I have a lot of used Dreamcast games that i bought that came w/o instructions on how to play, and some of these games are very complicated. Is there a place where one might be able to cut and paste or download a text file that contain instruction manuals for games?

please help me if you can