Forums
Home Brew Talk: The forum that sponsors this Wiki.
Brew Board: Also known as the "green board". Sponsored by Homebrew Adventures.
Home Brew Stores
The following are links to larger national homebrew suppliers. As always, check in your local area to see if you have a local homebrew supply shop (LHBS) that you can support. They are most often great people that can provide you help and expertise in your homebrewing endeavors.
How To Web Sites
How to Brew by John Palmer. An online version of his book by the same name. How to Brew provides a very good overview of brewing extract and all-grain beers and is a great resource for beginning and advanced brewers alike.
Paul's Brewing Page Provides illustrated overviews of the brewing process. Has examples of partial mash and all-grain brews. A good overview of a brewday with pictures to help understand the process.
Cheap and Easy Batch Sparging Denny Conn's page. Provides a good overview of batch sparging and the equipment needed to do it. Denny is a well-known homebrewer and is a pioneer of batch sparging.