Learn Vim Progressively online tutorial

Image While browsing this weekend I stumbled upon this page http://yannesposito.com/Scratch/en/blog/Learn-Vim-Progressively/ This is one of the best Vim step by step turorials which I have seen. You start with the very basic commands which will allow you to edit some text without knowing all features, then guides you through more and more complex commands which allow you to mastering the Vim use.