How do you track where people have been on the internet?

Stand-alone computer or on a network?

there is comprehensive tutorial on wikihow (http://www.wikihow.com/Recover-Deleted-History-in-Windows)
That was in another thread (https://www.askmehelpdesk.com/computers-beginners/erased-history-98311.html).
Check the wiki, under step 2 is a program called Super WinSpy that will show you a LOT of information.