Otakon.com--Great site with lots of info about the largest fan-based anime and manga convention in North America.

TheOtaku.com -- Lots of fan art, anime quizzes, and information on anime A-to-Z.

We-Love-Anime.com -- A great source for free pictures, as well as summaries of anime series. (You do need to register to use this site.)

Anime Cafe: A Parent's Guide to Anime

AnimeWebTurnpike - Directory, online magazine, links to fan pages, information on Japanese culture, and more.

No Flying, No Tights - Reviews of Graphic Novels

There are also many books and magazines worth checking out. Here is a selected bibliography: Manga Resources.pdf