I second Doge and FB. Get good rollers, no frills and a good, solid simple stand the size of a milk carton. Rollers are a completely different game than trainers. On a trainer you need all kinds of stuff or you will never get on for the next workout. Rollers concentrate your focus wonderfully. (And not so gently remind you when your mind wanders!) You do not need anything else but a target to look at, as Doge said, is a real aid.

Ben