Have a problem, list it on the Questions Newsgroup and another hobbyist may have already solved it. 

Do It Yourself Pages have links to the best web pages for projects and how to's.

If you have a cool tank with it's own site or know of a tank with it's own site.
list it on the Web Tanks page. This is a great place to go for tank ideas.

Check out the pages on the left for reviews and links to some of the best information sites on the web.

Need a part, cant find the right pump or are you just looking for a good place to buy coral.
There are hundreds of links to all kinds of suppliers in the suppliers section of the site

We have a great list of books that you can buy in the Shopping Section

if you want to start a low cost reef tank, Check out the link to 29gal system