How do I pour and finish a garage floor slab (13x28). I am planning on using a bull float?

First off, a 13X28 slab is a 2 or 3 people job. Make sure you have hand floats (preferably Marshalltown), edgers, and of course a bull float, and a push broom (optional - for texture on the floor). Make sure your bull float is "curved" right. Which means it won't leave grooves every time you swipe it. You might have to bend it a bit. If you don't own one expect to pay about $150 for a GOOD bull float. I do concrete for a living, and we always skreet the concrete, hand float it at least twice then bull float it then broom it.