The man pages was removed to save space.. but can easily be found through the browser by searching the net.. There are a man package in the extras-devel repos though. Don't know how good it works.. as i have not had any need for it.

Bash, rootsh, leafpad, wget and sysklogd could become useful too. So install them if you are familiar with them. Search if not.

http://repository.maemo.org
http://wiki.maemo.org