Hi E.,
Congratulations on your choice to switch to cloth! As a 4-year-and-still-going fluff mama, I have to say that I LOVE CD-ing, but the options out there can be confusing. How old is your baby? For younger babies doing some sort of prefold diapers (flat and need to be folded, but not to be confused with "flat" diapers, which have fewer layers) and wraps/covers is a good, economical option. I love Bummis SuperBrite and Super Whisper Wrap covers. You probably will need 4-8 covers (they only need to be washed if they're poopy), and 24-36 prefolds ought to do it. And if you buy/make your own cloth wipes, you can save even more money and trees (again 24-36, depending on how frequently you wash, is a good number).
If you'd like something "easier" to use than prefolds (such as all-in-ones or pocket diapers), things get a bit more complex. I really like the BumGenius diapers, and when my daughter was close to a year old, we used BG 3.0's (now replaced by 4.0) almost exclusively. With a bit of extra absorbency (adding a prefold or hemp insert), they're great for overnight, too.
Many cloth diapering stores, including Cutie Poops and Bottoms (www.cutiepoopsandbottoms.com) out in Orland Park offer cloth diaper trials. And several offer newborn diaper rental. This is a really good deal. Some of my other favorite Sites are Sweetbottoms Baby Boutique (www.sweetbottomsbaby.com) and Sew Crafty Baby (www.sewcraftybaby.com), both of which offer free shipping on any order in the US; DiaperCo (www.diaperco.com), and ClothDiaper.com (a great place for pre-fold and fitted-diaper bundles).
And Be By Baby (www.bebybaby.com) here in the city (Lakeview/Roscoe Village) is a great resource, too.
If you want to look up reviews on different types of CD-ing products, go to diaperpin.com.
And if you have specific questions, feel free to message me back.
Also, I highly recommend a detergent that's designed for cloth diapers. My diapers are so much cleaner now that I switched to EcoSprout. And I've heard great things about Rockin' Green, too. (There are a bunch of other brands out there, too.) And make sure you use an appropriate amount for your machine (and Chicago's VERY hard water).
And whatever you do, don't make the mistakes I made at first and use diaper cream with Zinc Oxide (bad!) and detergent with natural oils (bad!). Also, it's important to strip your diapers (just Google stripping cloth diapers) about once a month. I would've saved a lot of money (and diapers) if I'd know all of that from the get-go.
Good luck!
R.