I recommend searching youtube and watching all the various videos they have on how to do binding. See which one makes most sense. Thats what I did. Then I had the video I liked best set up next to my sewing machine and played it, watched it step by step as I made/attached the binding.
I sew the binding on to the front and then fold it over to the back, pin or wundaweb in place and stitch in the ditch from the front. But I am sure the more experienced ladies on here will tell you the advantages of all the different ways of doing it. There are already some useful threads on here if you do a search! Good luck!