I used prefolds with my DS as a newborn and I would recommend a minimum of 24 prefolds but 36 is much better and gives you extra for laundry day. I had 36 and it was perfect for us, I don't like feeling like I might run out if I don't get the laundry done. The extra 12 gave a perfect buffer for that. I recommend at least 3 covers per dozen prefolds. If you plan on trifolding in the cover at all (which is what I did) you might want one or two more.
Posted from my iPhone/iPad, probably while breast feeding. Mistakes likey
Elisha, wife to my amazing husband and SAHM to my beautiful baby boy, Titus.
Expecting our new little one December 2013!