I take that back. If you’re going to start with charge characters then don’t use C. It’ll help you use those moves without being dependant on the rolls. I got about six free throws in yesterday at Boardwalk.
K-CBS just hit that fierce button and do random supers when you are raged.
some good characters:
Sagat/Blanka/Sakura/Vega(Claw)/Hibiki/Honda
I use C-groove… 
abel.
oh wait…
Sakura? Hibiki? ehh… I dunno…
I agree… not sure about them for beginners
Sak is probably okay if you just tell them RH is a really good button.