If you do a search you can find some good info.
Certs to check out would be
these 2 require a 4 yr degree though last I checked
other notable ones would be NASM, ACE
A certification is really just a foot in the door and a stepping stone in your education.
The key is to study your butt off outside the cert by reading material by some of the leaders in the field
(Kaplan, JC Santana, Boyle, Cressey, Berardi, Thibs, etc etc)