How to get started in Web Development???

All-

I am trying to get some insight into the possibilities/route to take with teaching myself web development from home. I currently have a degree in Graphic Design without any experience with Web. I have done some research online and it sounds like it can be done. (hopefully this is correct) I would like to be able to do web part time to start but eventually work towards making it my only source of income. Is this possible without another degree? I've read a lot about universities being behind with what's current. Can anyone lead me in the right direction? Are there any books as to where to begin? I'm completely in the dark as to what I need to start with exactly. No idea about xhtml, html, css, and all of that...but I want to learn! I just don't know WHAT to learn if that makes sense.

I greatly appreciate it!
Thanks