Re: Taking flooring 'lessons'...is the pro right?
Drum sanders are extremely aggressive and should only be used on full thickness flooring or decking.
Floor buffers are slow and perfect for wood laminate where you only want to remove a small amount.
Google both machines for pictures and instruction on use. As Calcats mentioned, you'll also need an edge sander to get along the walls. It is best if you remove the base moldings, but it isn't an absolute necessity.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!