Ah, the snare. My old nemesis. It took me eight freakin' months to get this sound down. Eight! It's supposed to be one of the easy sounds! Eight months! Ah well, I've explained it nice and easy so hopefully it won't take you guys quite as long.
This video teaches the bare basic sounds and gives you some beats to practice. Online metronome - http://www.metronomeonline.com/