To Ride A Silver Broomstick by Silver Ravenwolf
Wicca: A Guide for the Solitary Practitioner by Scott Cunningham
The Wiccan Book of Ceremonies and Rituals by Patricia Telesco
Your Book of Shadows : How to Write Your Own Magickal Spells by Patricia Telesco
The Celtic Connection - A great site for beginners. The Celtic Connection is ran by nine people of many different communities, cultures, and even religions. I (Edana) TOTALLY recommend this site!
Open Sesame - If you're browsing with a specific thing in mind, Open Sesame has over 300 seperate pages on a site map, and the information is good.
Branwen's Cauldron - Since Pagan supplies stores are often hard to find, this site offers a wide variety of choices for new and advanced Witches. It also has a few other good Wiccan information.
Pagan Profiles - Looking for a Wiccan near you? This site is basically a Wiccan/Pagan/etc. people search. There are over 2000 people signed up, and over 1000 profiles. Great for finding a coven or just another Wiccan friend!
The Witches' Voice - A fun place to go to learn about all different kinds of Pagan religions, and a great place for networking. The site is huge, and really great!