Wow that was good! I'm very happy to have found this. I've had very little luck finding good tutorials for experienced programmers who just want to pick up JavaScript. Most tutorials I found either assume very little prior knowledge and write dense paragraphs on what an object is, or they assume too much and explain too little. I love the focus on example-driven explanation as I somehow process code much faster than text, and I love that it is all on a single page (a surprisingly rare feature!).