Describing how to buff on here is difficult. I would suggest that you look for a local cleaning contractor to you, give them a call and explain your situation.
If they are nice, they'll give you a half hour lesson on a buffer somewhere. Its all about practicing, but its good to be shown the basics. As important for the floor is to keep it dust mopped/swept as often as possible. If its wood, then dont use lots of water when mopping, just a lightly 'damp' mop head used once a week or so will do.
Use a red pad when buffing it up to a shine, but only after it has been swept and possibly mopped to remove dirt. Or, you'll have a shiny dirty floor. You'll need a spray buff solution too. Any janitorial supplier will advise.