Hi Rob, Welcome to the Forums!
If you've completed install and are logging in at the command prompt, it's likely that you've not installed a GUI. You can test this by typing
You'll need to be root, or sudo that one, but if you have installed a desktop it'll load.
If not, you can use
yum groupinstall <<desktop name>>
to get the desktop you want, but it may be a good idea if you rushed through the install to re-install and just double check you have everything as you want it?