Users: How do I create a new user?
File sharing/security: How do I share files?
Installation: Sometimes the Administrator must be logged in to an NT workstation to install an application.
Printing: If a user is having difficulty printing, make sure the problem isn't widespread. If just one user is having problems, reboot their system and try again. If it's still a problem, check the Printer properties in their Control Panel. Make sure the printer they are attempting to print to isn't offline, and that it is installed properly.
Microsoft's FAQs for Windows NT