Are you having trouble locating the User Profile Synchronization status?
Head over to your Central Admin page and select "Manage services on server" from the System Settings section
Find the User Profile Synchronization Service, hit "Start". You should be taken to a new page where you can confirm your farm account password. From there, hit OK and you're away!
If you're still unable to get the service started, check out this handy web site for a possible solution.