It has already been mentioned, but I cannot stress enough about getting your college degree done as early in your career as possible and then keep reaching higher, Masters, PhD, Doctorate, all will help in your military career to set you ahead and also for your career after the military.
Along with all the other great suggestions already given, education is the biggest thing you can do for yourself even more than just setting yourself apart from your peers, it will benefit you in the long run for your life.
Alot of great repsonses already, CSM Poll has the most detailed list considering where you are right now. MAJ Zeski and SPC Thundercloud also made great points, do things in the unit that will get you remembered for the RIGHT reasons (no one wants to be remebered for the WRONG reasons).
Get yourself some good mentors as well, at least 2. One that is a 92Y and one that is not.

Training
Career Advice
