Hi, I suggest you start with the Org Compact Guide, which is smaller than the complete Org manual :
http://orgmode.org/cgit.cgi/org-mode.git/plain/doc/orgguide.texi Also, if you start translating, I strongly recommend putting the translated manual on a public repository where people can contribute, and advertizing this as soon as possible. It is very frustrating to work on something and discover other people have been working on the same thing by lack of information. Good luck and keep us informed! Other spanish readers on this list can help with various aspects of the project. Best, -- Bastien