First, a few local cloth diapering resources here in Des Moines that are worth their weight in gold:
www.wallypop.net - Sarah is wonderful, answers questions, shows examples of different products and how to use them.
www.storkwarehouse.com - similar to Wallypop, good people
www.desmoinesdiaperservice.com - diaper service for those who want cloth diapers made a little easier.
Personal experience: I have 2 daughters, one 11 years and one 13 months. The older one had gerber prefolds and plastic pants complete with actual pins to hold them together. The younger one we use mostly Bumkins covers with prefolds, going back to the prefolds and plastic pants for a night time diaper. With the Bumkins I like the velcro closures at the side that make them easy to adjust, they fit forever, but those simple pull up plastic pants are the best thing I've found for stopping leaks, period.
We used a few other kinds to see what worked, which I believe you'll probably wind up doing, too. We used the newborn diapers with the umbilical cut out for about the first month, but I still think the plain plastic pants were easier there, too. At first babies are so small, it's just tricky to get the diaper on without covering half the baby! We also have some cute pocket diapers, but they did tend to leak if you didn't change them promptly.
My advice would be to get a "sample pack" of diapers and/or covers, many places offer this option. I would also get at least a couple dozen prefolds because they're just so useful no matter what you end up using, and they can hold you over until you decide. Find out what works, and what you prefer to deal with, and keep your partner in mind. My husband wasn't comfortable with diaper pins, although I used them with my first child, so we use snappis to hold the prefolds in place in the pull up pants.
At first diapers of any kind are a little overwhelming; I remember washing loads of diapers and wondering what I was thinking when I committed to cloth diapers. But my daughters almost never have diaper rash without use of any creams (which would make the diaper less absorbent.) Their bottoms get wet, but I think what causes the rash is more the chemicals than the wetness. We found that both of my girls break out if we use disposables for a day or two while we travel, although we have found a few biodegradable, eco-friendly disposables we use for this purpose. My point here is don't give up, if one kind of diaper isn't working for you, try something else. Disposables can't offer that kind of variety, now can they:)
Congratulations on your first, you're gonna love it. Remember, being a Mommy is a natural role but an individual one, so always listen to your gut you'll know what's right for you.