If you're looking for tarot, tarot readings, tarot community, and more tarot decks, please visit the websites below.
Here's our favorite site, where you should start if you're new to tarot:
This is an excellent and respected on-line course for learning tarot: Learning Tarot.
Alternatively, there is The Tarot School (and Reader's Studio). The Tarot School offers several different modes of learning tarot.
The Byzant Tarot site offers oracles, readings, and many wonderful articles, links, and references.
If its tarot history you're looking for, the best place learn and participate is the Tarot History forum.
There's a yahoo group for people who want to learn tarot, and it's a community as well, just for people who want to learn more from each other.