Who hasn't heard of Google? You'd have to be from the dark ages if you haven't heard of it. Even the least tech savvy folks should know the name. For those of us who know, use and love google, have you seen their Official Blog? If not, a simple google search will "click" you in the right direction. It's loaded with info on all their products. Most recently is Slide Rocket EDU. Slide Rocket has been out for a while but now there's an education version (presentation software for collaborative education) and yes, it's FREE if you have a google apps account through your district. This is just one great app but trust me...there are tons more.