I am absolutely new to linux and don't know a whole lot about this, but I'm trying to learn!
I already looked through old questions and it seems that usually the installation of Ubuntu offers the option of replacing the old windows instead of running Ubuntu alongside it, but I never got that option. Because my computer is a two year old netbook and is getting super slow, I would like to format it and run only one OS, just need it for the basics (School, email, music...).
So now, I have both Ubuntu (I think its 12.04.3 LTS) and Win 7 Starter on my computer, how should I go about this?