I've been reading all these replies and must say there's some good advice/input.I got my OW a few yrs ago and wanted to take some more classes after,unfortunately blew 4 discs and a cpl operations later,yrs have passed since my last dive.I'm gonna change all that and continue diving this yr. and eventually get more certs.Myself I wouldn't want to cram all that learning into such a short time, spending all that money just for a card with a title on it and walking away really knowing nothing.Exp. is everything in anything you do, and experience takes time to achieve.I'ld say get your OW and dive, dive,dive,then dive some more.Learn from all your dives and the people you dive with, and then move up the cert. ladder if that's what you so choose to do.