Ok, if you want help, here you can go the Lowes or home depot and buy the whole shebang for anywhere from 200-5K dollar door and frame. Your going to need a crowbar, shims/biscuits and a few other tools.. If you go to home depot, buy the home 1-2-3 book, it will give you some good knowledge for installing a door.( double check this buy flippin thru the book, they have a few books and the carpentry one might be better reference)
Good Luck, not to mention i am sure a good Google search will help you in more info.