You can set Logon Time for Users in Active Directory for security purposes to regulate logon sessions. This will prevent you from signing in at any time.

How to Add a Computer to Active Directory. Adding a computer to Active Directory is straightforward. In most cases, all you need to do is join the workstation to your Windows domain and reboot it ...

Want to know how to set permissions in Active Directory for users? Using GPMC or AD for computers and users are the best methods.

If I want to administer them from a workstation, I can install the management tools and then use the active directory users and computers. This lets me view a domain but only one.

Using PowerShell, Adam shows you one way to compare a .CSV file full of employee accounts with Active Directory users.