Home Brew Talk - This is a great homebrewing resource. The site is full of people that have been pursuing the hobby for years, and there is a wealth of knowledge regarding virtually any topic of brewing.
How to Brew by John Palmer - This online book will take you step by step through the brewing process. I would recommend it for anyone that is either thinking about or has just started homebrewing.
Basic Brewing - I really enjoy listening to this podcast. It covers everything from well, basic brewing, all the way to some very advanced techniques and processes. In between the hosts, James and Steve, do some great interviews with some more obscure homebrew topics like the science of taste.