Welcome Pallee,
Probably one of the neatest ways to set up a small indoor system with an aquarium is just to have the growbed directly over the tank. This doesn't work if the growbed is to heavy because you need access to the fish. If you look at the video on the bottom of this page you'll see some being built using tongue and groove bead board (at least that's what I think it is) to surround and support a store bought plastic container which will become the growbed. The build starts at 11:35 http://www.backyardaquaponics.com/forum/viewtopic.php?f=18&t=9276&hilit=Hungary&start=540
I'm not sure if they rest this directly on the aquarium or not.
Here is another mini system with instructions - http://www.grobergreen.com/build-a-mini-aquaponic-system/
These are just to give you ideas.
My guess is even with the smallest aquarium pump you find that you'll turn over the system at least once per hour which seems to work well for most systems. You do need to make certain the pump can deliver at least one volume change per hour at whatever height above the water surface (water surface to highest level pumped is called the head height) it pumps to. Usually there is a manufacturers chart giving you that information.
It doesn't take many fish for a small system. The type of fish used depends on the conditions in the aquarium. If you plan on heating the tank then tropical fish will work. Pick something that won't get to large for the aquarium especially if you aren't planning to eat the fish later. Just about any fish will work but make certain it's legal in your area. To get good plant growth you'll need a good quality fish food (most flake foods won't work well).
Keep us posted
), and thanks for the informative links and encouragement!