Personally I grew up in this world. I spent a lot of time on the computer in middle school building webpages with dreamweaver. Although I went to film school I retaught myself (minus dreamweaver) to code for the web using front and back end technologies. There are a lot of great resources out there, but personally I really enjoyed Lynda ones. I feel that site gets the reputation that it's for old people who don't know any where else to go, but it contains very full and comprehensive walk throughs of whatever subject you're wanting to learn. It does cost money however, so if you're not willing to pay or don't have the cash for it look around the web. Places like the mozilla developer network are a great place to start.
Long story short, I don't think there's really one-stop-shopping when it comes to learning something new. There's a lot of information out there that requires a lot of research, but the great part (if you truly enjoy coding) is that it's fun research, fun to search for new things, build new things, take on new challenges. :) Good Luck!