I left an abusive relationship, now what can i do?

Im only 20 and i just got out of an abusive relationship. I know its alot to read but i would appreciate any advice thank you in advance. My husband has a major anger problem. after four months of being married and multiple women that ive discovered he has been talking to and sleeping with, enough is enough. Hes 26 and made that an excuse as to why he could put a leash around me and treat me like i was his punching bag. weve been through deployments together and alot of struggles, ive been the good faithful wife but hes yet to show me any respect( cheating and lying to me is far from it). I took the fopportunity i had to bail out of this marriage and i changed my number, email, any way of him possibly conatcting me.This is my last yr of school before i get my degree. And i plan on joining the military myself because i need to build a solid foundation for my kid. My questions are. How long does divorce take before being finalized? What are my options other than putting child support ( i dont want anything from him)? How do i move on with my life when hes broken me? Thanks for ur help.