W3 has every coding language on a nice little sidebar. They’re a great source for learning or even just quick referencing.
I use the other sections for graphic design; I would hope all of their web tutorials are just as good. Glancing through the tutorials look pretty good though I have yet to test drive any of them myself.
Just noticed this one existed! It’s looks fairly new with 64 tutorials in total but should prove to be a useful resource none the less. They will more than likely be adding more tutorials as time goes on.