I fixed the link (I had renamed Bitbucket repository).
Also, it is not supposed to cover the whole of Vim. Just enough to get you started without getting scared away immediately.
Also, thanks for the $ (it should work mostly but I haven't covered all the different browsers; try alt-gr+4)
https://bitbucket.org/egaga/open-vim/issue/1/tutorial-sectio...
Try vimtutor in your terminal. It's supposed to take 30 minutes.
You'll miss a lot of things from the tutorial the first time but you can come back to it as often as needed. You also shouldn't go any further than the tutorial until everything in it makes sense. Once you're at that point, you'll be autonomous for finding new commands and a happy vim user.
I may sound mad but seriously, what's with the a-web-app-for-everything madness?