My little corner of Opera

http://www.sitepoint.com

This is one of the most authoritative resources on Web site design and development. The forums are hands down the best place to ask for and give advice on.

http://forums.digitalpoint.com

http://www.alistapart.com

While not as relevant (in my opnion anyway) as it used to be, it's still a valuable resource for those learning about Web standards. The code does need to be cleaned up though.

http://www.digital-web.com