God is Imaginary! This website is an eye-opener - it uses simple language and short videos to explain that, despite centuries of tradition and cultural beliefs, all gods are imaginary.
The Secular Web This link will take you to a wealth of information and resources for understanding why all religion is deeply flawed.
The National Secular Society (UK) Link to the lobby group for a secular society in the UK. Support them - they will bring political change and freedom from religious privilege.
British Humanist Association Link to the BHA - the other major lobby group in the UK - advocates of a positive humanist outlook on life. Offering non-religious ceremonies, advice and good solid ethical philosophy - with no dependence on mythology or dogma.
Why doesn't God ever heal amputees? These and other questions are answered here.
The Brights A community of people who hold a naturalistic view of things - goodness, life, ethics, beauty and happiness are all possible without reference to invisible Iron-Age Deities from the Middle-East!
Freedom From Religion Foundation A hugely important site in the USA, becoming ever more vital in my own country, the UK.
Freethought Radio A great station, lots of interesting short readings, interviews, satire, excerpts.
Graveyard of the Gods You can browse around this site for hours - lots of great articles.
The videos of Pat Condell (MySpace) This guy tells it like it is, using razor-sharp comic wit and irony.