The world of cloth diapering can be a bit overwhelming when you first start investigating it online. There are so many more options now than there used to be. You don't even have to use pins if you don't want to use them.
I began looking into it to save on finances but quickly realized the benefits are far more than financial. I have been a fussy mom about what the kids eat. I don't want them to have any more chemicals than necessary (food coloring is the worst). Well, I recently realized that I had strapped a bunch of toxic chemicals to their little bottoms for 24 hours a day and never gave it a thought. I did not want to do that to my new baby. So my cloth diapering journey began. It really is not as bad as I thought it would be. It is little more work than a disposable.
To follow are some links that will hopefully prove helpful to you. I started with a dozen flatfold (just a square of fabric...I even made some of my own from flannel) diapers and a few waterproof covers. I would just fold the diaper into a rectangle and set in in the cover. Strap the cover on (they have either velcro or snaps) and you are done...no pins necessary with this method. I have since moved on to fitted diapers and covers. The diaper itself velcros or snaps on but still needs a cover. You can also use all in one diapers that don't need a cover but are a bit pricey. The cheapest way is the way I started with. On to the links.

Here is a link to instructions on making your own diapers...Sewing cloth diapers

If you want to buy diapers and don't mind used ones I have found some fantastic deals on Diaper Swappers Instead of using a plastic cover you can use 100% wool as a cover. I really like these, here is a link to instructions for making a "soaker" out of a sweater...just make sure the sweater is 100% wool. Wool Soaker