First off this doesn't mean that your computer is ruined. First off, I would recommend that you run either the repair install of the recovery partition on your computer. This will ensure that you still have a working windows os if you ever need to go back to it.
Once that is done I would recommend that you check out this screen cast: Installing Ubuntu This is a screen cast for installing Xubuntu specifically but it goes through all the important steps that you will use for installing any of the flavors of Ubuntu.
Cheers!
Once that is done I would recommend that you check out this screen cast: Installing Ubuntu This is a screen cast for installing Xubuntu specifically but it goes through all the important steps that you will use for installing any of the flavors of Ubuntu.
Cheers!