The online help is really quite good, and unlike anything you put together, won't immediately become out of date. User support people here are still passing out printed copies of a copy-pasted digest of the ZCS 4 online help because it would be too much work to copy-paste the online help for ZCS 5, to which we upgraded in January. Crazy.
Alas, there are these:
Bug 13194 - JS error while navigating to help from mail client Bug 23940 - webmail help never finishes loading, generates error in firebug ("Component is not available"