Ok... newbie

I'm seconding the betta motion! Just make sure he's healthy, and his tail is in good condition. A betta, and a few dwarf cories is a GREAT 10 gallon. (preferably, try to find a store that has their betta's in tanks, or big jars, instead of 'lil cups. Usually happier, healthier fish that way)

I'm also "seconding" the cycling motion.
 
AquariaCentral.com