The house I am working on is made of cider blocks. I am replacing the front door. How do I install and attach new pre-hung door to the cinder blocks?

you'll need to attach a 3/4 board or 2x4 both need to be treated to the wall. This will give the exterior trim something to nail to. Also fasten these with ram set nails or cut nails. If you have a hammer drill you can use screws