There are many Webmaster Forums on the internet these days. Some may have useful information that can help you in building websites. The following are a few you might want to take a look at. We don't endorse any forum or take any responsibility for the content. Use any forum at your own risk.
Webmasterworld.com is a place to talk about building and running a website and online business. The management of all aspects of a website is a difficult challenge and the more knowledge you can gain the better your results will be.
The forums at SitePoint, for example, offer answers to questions about websites, as well as a place to buy or sell a website. (sitepoint.com/forums)
A lot of webmasters also hang out at the Warrior Forum.