Beer, Wine, Mead, & Cider Brewing Discussion Community.  This is a huge resource!

How to Brew
By John Palmer
An outstanding source of information.

American Homebrew Association
A fantastic source of information including education of the different levels of brewing, upcoming events and competitions. The forum is a valuable source of information as well.

Ale Street News
A newspaper chocked full of beer related information. This one covers a lot of the ever-changing commercial brewing activity.

Burgundian Babble Belt
Resource for all things Belgian and Funky. The forum is an excellent source of information.

Basic Brewing
Radio and Video Brewing Education.

The Brewing Network
A fantastic resource for education an knowledge. Live internet radio and archived podcasts.

The Real Beer Page
Everything you could ever want to know about beer, brewpubs, microbreweries, home brewing, and the beer industry can be found here.

The Brewery Library
Technical articles on brewing-related topics.

Beer Advocate
This is one of the largest beer rating sites on the internet.

Rate Beer
A very good beer and place rating site.

The Beer Mapping Project
The Beer Mapping Project is a Google Maps-based site where users can see maps of breweries, brewpubs, beer bars, speciality liquor stores, and homebrew shops in cities all around the world.

This website is managed by the Brewers Association, and is a one-stop-shop for all things beer.