Edo's Yu-Gi-Oh! Page! http://www.stormpages.com/edhrzic/Yugioh.htm this is a page I highly recommend, it has tons of information on the card game, anime and manga.

King Yugi: Yu-Gi-Oh! http://www.kingyugi.com/indexen.htm this site is pretty good, it has pictures of both English and Japanese cards, though mostly Japanese.

Yu-Gi-Oh Realmshttp://www.yugiohrealms.com/ Great site