There are different classes of documentation for MoinMoin:
For Users / Admins
the help pages (see the HelpContents page in your local wiki)
- the install / upgrade docs (see docs/* in the download archive)
If you read the above mentioned docs online, please be careful about version differences.
Your local docs are the best match for your local moin.
For Developers / Translators
HowTos - user-supported, verbose step-by-step docs describing how to solve some complex problem
MoinMoinTips - short, but useful tips
MoinMoinQuestions - ask and answer questions there (please read other docs first and also the questions that are already there and answered)
WikiCourse - a tutorial for beginners
These are community maintained docs. If you find some error (and you are sure) or something is missing, please fix it.