I've found the tutorials on Lynda.com to be very engaging. The videos are very thorough, and it's definitely worthwhile coding/making notes as you watch the video. I started with James Williamson's Essential HTML Training, then moved on to Simon Allardice's Essential Javascript. Once you have the basics, try and come up with a little side project of your own and just go for it. If you get stuck, there's lots of help available on places like StackOverflow.