David duChemin has made his first eBook, titled Ten free. He describes it as:

The premise is simple, if photographers could cut through the noise and work on their craft without being bombarded with the need to buy more gear, and the newest and shiniest, we’d become better at our craft and create more compelling images. TEN is exactly what it says it is, an exploration of ten techniques and ideas that can improve any photographer’s work.

It’s a great book and a great introduction to Craft & Vision for those that haven’t purchased an eBook from them before.