Hey Sage- I tend to clarify it by saying Paganism is the broad term to encompass religions that do not believe Christ is the mesiah (the original "definition" of the term). Just as Christianity is the broad term to encompass those who do.
I'm a fan of Scott Cunningham and AJ Drew, as far as authors go. They are more Wicca based, but still very good authors. Not sure on websites. There aren't too many I trust. But I'm open to answering questions if you have any.