redseal once bubbled...
Brian, I'm just passing on advice from my dive instructor/LDS owner: get AT LEAST 30-50 dives under your belt before you consider rescue diving. That way you'll get more out of it. "You don't know what you don't know until you know more" is basically what he and a couple of his instructors have told me.
By all mean, tho', dive and dive and dive, and consider some of the advanced dives, like deep, navigation, PPB, SAR, night, wreck, drift, etc. All of these will present different situations and opportunities to develop and practice various skills. Then, when you have a diverse background of dives, rescue diving could be approached. Personally, I'm hoping to take rescue diving for my own personal satisfaction/training next summer, after having at least a year of diving experiences.
Just my $0.02, but maybe some of the more experienced (Regulators?) have some words of advice to share as well.