Taking it with a slow start at first, is good advise. You don't want to try and go all in, or whole hog, off the bat. Not unless you had diaper wearing desires you whole life, but never had tried to do so. Going with the briefs from a local store is a good economical start. They are not always the greatest ones to be had, but for a test entrance run into the realm, they will do. If you feel good about it, after trying some, and you want to go on further, I would direct you toward some on line sources for diapers. If you are not familiar with any of these already, I will list some good places to check out for yourself. The ones you can get at these places, are more, well... just more! You can get plastic backed types, more like the older types, and more baby whimsical, child like. These will have prints of different types. I will list some places to get cloth diapers, and plastic pants too. You may want to try getting into some of these as well? They would be a bit more of an investment, and would require washing, of course. But they will last a long time, and end up costing less in the long run. That's for you to check out, and decide for yourself though. Hope it will help you out some?
The first ones are for disposables. The very first of these, also has cloth on their site, FYI.
http://www.abuniverse.com/products/abu-cushies.asp
http://bambinodiapers.com/
http://www.xpmedical.com/index.html
Here are a few for cloth.
http://www.fetware.com/
http://www.babykins.com/
http://www.changingtimesdiaperco.com/
http://www.baby-pants.com/index.php
Those are some of the places to look at, many more can be found.
Have fun, good luck, and enjoy !!!