Taken from Yahoo Answers »
I've been learning about and considering Paganism for a long time, and I think it's for me. How do I become a Pagan?
Paganism refers to any of a wide array of spiritual/religious beliefs based on Pre-Christian non-centralized beliefs. If you want to be a pagan, you are one. There are specific initiatory rituals for Wicca, Asatru, and Kemetism, among others; all of which are pagan religions.
A pagan who is not a member of a specific organized "path" such as the above is referred to as an "eclectic pagan". Eclectic pagans are those who do not follow the beliefs of any other group or individual specifically, but instead create their own path based on what feels true, right, and natural to them, usually borrowing from the practices of many other religions.
If you are interested in practicing Wicca, which is probably the largest pagan religion, I suggest "Wicca: A Guide to the Solitary Practitioner" and "Living Wicca" both by Scott Cunningham, as well as all of the works of Gerald Gardner and Raymond Buckland. Some of the books written by Silver Ravenwolf might also be helpful to you.
For more information, answers to questions, as well as lessons and articles on eclectic paganism as well as specific paths, a more dynamic resource is important, so I suggest the following message boards:
As to those who have answered this question with negative things to say, you have my pity. It must be difficult living with such a narrow and closed-minded world view.
May you find what you seek.
Landra, High Priestess of the Coven of the Crossed Paths