Emacs cheat sheet - help needed

[Ricardo Bánffy]

Hi folks.

I am currently working (leisurely, for sure) on a cheatsheet for new
Emacs users. It currently exists as a mind-map but will eventually
become a freely available PDF more or less like the "navigational" one
there is for git you can download at 
http://zrusin.blogspot.com/2007/09/git-cheat-sheet.html

The current version is linked on 
http://www.dieblinkenlights.com/blog_en/an-emacs-cheatsheet-as-a-mindmap.

Thanks. Any comments, from newbies and veterans alike, will be
appreciated.