Learning

Give me your best references/websites to learn JavaScript/AJAX/CSS.
GO!

I already know most basic stuff in CSS but I feel like it isn't enough to call my knowledge about it "decent".

at least OP got the AJAX part right, it's a better idea than all the on-the-fly generated html (think websites written in php and asp) we're currently sending over the web.

also: learn to love jquery, but don't use it to create "fancy" websites. scan hackernews to stay up to date. dive into html5. write the backend in racket. etc...