I love cloth diapers. I've never tried reselling them, but I have 5 children and am praying for more, so we just use them until they wear out.
My preference is for covers with velcro rather than snaps. They're faster, and you get a more custom fit. I like to buy good quality prefolds as the basis of my diapering system. The ones from Green Mountain Diapers are awesome. In fact, I still have a lot of the ones I bought for my oldest son, and they're starting to show a lot of wear, but they work great.
For covers, I like to buy cheap so I can buy a lot. For little babies, I really like ProRaps. You can buy the seconds directly from the company for really cheap. It's been awhile since I bought any, but I want to say they were about $7 each. I like to have about 10-15 in each size, and I wash them and dry them with the diapers. They don't last as long if you dry them, but that's why I buy cheap ones.
As they get older, I prefer pocket diapers. A tri-folded prefold and a cover without pins or a Snappi doesn't cut it once they begin walking. They end up with saggy bottoms. A fitted diaper plus a cover is another option, but it takes a little longer to fasten the diaper on and then fasten the cover. I do like the workhorse fitteds from Green Mountain Diapers, though. They absorb a lot for a fitted and dry pretty fast.
I only keep a few all-in-ones around, mostly for the diaper bag. They're expensive, they take forever and a year to dry, and they don't last long. Plus I've never found any really great ones that don't leak easily.
I do not like "one size" covers. They aren't all that adjustable. I bought a few Econobums the other day because I was a little short on covers, and I regret it. I bought them for my 2.5 year old, thinking it was best since he's going to be potty trained soon, but they fit my 3 month old on the biggest setting. I imagine they'd fit some slim, small toddlers, but mine is really tall and a little pudgy right now because he's about to have a growth spurt. Plus they have snaps. Velcro will get icky and not as sticky over time, but you have to be very gentle with snaps or you'll rip the diaper.
When it comes to washing, I have a washable bag in a large kitchen size trash can (with a lid). I don't do any swishing, dunking, or spraying. I just wash the diapers as they are until the waste is of a "plopable" consistency. In other words, I'll plop anything that comes off easily into the toilet, but that's it. It's always worked well for us. However, due to a family history of food allergies and a really good milk supply, my allergist and pediatrician don't recommend I give my kids any solids until they're one. Before then, it's breastmilk only. I think it's mostly the kids who are 6-12 months old and eating solids who go through that stage where it's like peanut butter--in other words, very thick and sticky. Mine go straight from breastmilk poo to more adult-like formed stools.
There probably are better brands and options out there than what we use, but when I started with my 9 year old, there were fewer options. Most interesting diapers came from small, work-at-home moms. I found a system that I liked, and we've stuck with it.
I do recommend to anyone starting out, invest in the ones with snaps.
I am of the old school and cloth diapered my older ones because we were broke, and I "saved" the pampers for when I was out. 
and we will be lucky if that lasts a month!!! I would LOVE some more advice and rexommendations on where to buy and what I need, Thanks 
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