Cephalosporin Antibiotics

I've worked at Walgreens for almost two years, and have seen a great many prescriptions for antibiotics, but until I started the infectious disease class this year, i didn't really know the difference between all of them. One thing I didn't know about were the great number of cephalosporins that I didn't know about. Of course, a lot of them are administered IV, so that's why I've never heard about them, but trying to remember all of the names is quite a chore, especially since the names all start with cef- or ceph-. Anyway, I guess I'll get it all straightened out eventually. It is quite interesting though.