Welcome! If you can swing it (pun intended) try to get at least a few private lessons with an HKC or RKC instructor. It'll be well worth the price and they can show you how to plan your workouts. You won't have to spend a bunch of money on dvd's etc.
That being said, if you decide to get dvd's make sure you get ones that are made by RKC instructors, IronCore dvd's are good for starting out and not very pricey. Some of the other good instructors are Lauren Brooks and Andrea DuCane but they're pretty pricey for starting out.
It's really hard to get the hang of the swing with that light of a bell. It has to be heavy enough to load your hamstrings at the back end of the swing. The usual starting weight for a woman is usually around 18-20lb.
Swing Like You Mean It- RKC Style
Currently swinging either a single 55 lb. or two 25 lb'ers.