I'm not finding much on NSM and thought someone could direct me to some
training and trouble-shooting tips for NSM.

What is required for NSM to work? What are the basics?

If environments, home directories are missing or mispelled. Can NSM fix
this or is the a bunch of clean up that is required?

Just plan typos in username and then maybe it was renamed and environment
tab has the old name.
Typos in either the home directory or the userid.
User has rights to home directory that no where matches their userid.
User has rights to multiple home directories.

Any of the above examples, will they cause problems.

thanks in advance,