Jump-starting web development know-how

I am a veteran programmer and database developer who now needs to know something about web development. Forgive me if I've missed this in the archive, but I would love to find a concise introduction to web development. I want to understand what Python, PERL, Java, C#, ASP, CGI, .NET, XML, etc. mean and how they relate to each other. Tradeoffs in selecting one technology over another would also be helpful.

References and citations are welcome. Thanks.

Rick McCraw

www.htmlgoodies.com
www.w3schools.com
www.webmonkey.com
www.programmersheaven.com
and of course, you can always try the almighty Google

i know a few more but can't think of them off the top of my head, but those should get you well on your way. Another suggestion is that once you begin to learn, immerse yourself in the community, forums like this are great for that.