Below are resources you may find helpful in learning about or living in chastity.
Locked Men – a comprehensive forum for key holders and wearers along with good reference materials
Fetlife – huge fetish lifestyle social site with lots of groups and forums, with many about chastity
Emlalock – online chastity keyholding service which requires wearer to send in a pic of the combination
Carilock – online chastity keyholding service that allows other people to add or deduct time
Gay Masters and Slaves – sister site with gay s&M theme containing sections on chastity rules and punishments