A Bunch of Hot Air: Home roasting how-to, from a tinkerer's point of view.
EspressoMio: Tips and tricks for popper-using home-roasters.
Homeroast Digest: Digest of email newsletters on home coffee bean roasting.
Homeroast.com: A directory of websites of interest to those doing home roasting. Has sections on equipment, beans, organizations, and magazines.
INeedCoffee - Why Home Roast?: Tutorials to learn how to roast coffee at home.
Roasting Coffee with the Alpenröst: An online calculator that determines the optimum setting for achieving desired roasting conditions, given either the desired roasting temperature or coffee load, as well as the ambient temperature.