Some books that I highly recommend for anyone who is serious about learning about Wicca and its beliefs and practices include the following:
" Wicca: A Year and a Day " by Timothy Roderick
" Wicca " by Thea Sabin
" The Elements of Ritual " by Deborah Lipp
" The Heart of Wicca " by Ellen Cannon Reed
:" The Witches' God " and " The Witches' Goddess " by Janet and Stewart Farrar
And of course I'd suggest reading " Witchcraft Today" and " The Meaning of Witchcraft " by Gerald Gardner, the father of modern Wicca.
And here are some websites you may also find useful:
The Witches' Sabbats at http://www.witchessabbats.com/
Wicca for the Rest of Us at http://wicca.cnbeyer.com/
FAQ page. The Wiccan Church of Canada http://www.wcc.on.ca/faq/index.html
History of Wicca at http://www.wcc.on.ca/faq/index.html
That should get you started. If you find you have particular questions don't hesitate to ask me.