I was wondering if there is a way to block the internet tab (applications/internet) from one user. I am trying to allow games to use the internet but not allow the use of browser.
You could try using the Parental Controls application. There is a detailed guide here on how to install and run it.
If you select the user that you want to limit, and choose to leave the "browser" option as off 24/7 then that should do the trick.