It's been crazy busy over here, so I haven't had a chance to put up too much over on the wiki. So with what time I did have, I uploaded the most basic, fundamental chapter- Getting to know your Arduino! For the true beginner, like myself. Actually, Matt and I had a little debate over what to put in here, but we ended up keeping it on the leaner side. So if you've got something to add, here's your chance to do it!
On another note- thanks for all the support on the book! I've shipped a couple out and only have one copy left (okay so I didn't start out with that many) but quite thrilled nonetheless. I can't wait to get some input as the book on open source hardware itself becomes open source!