There are many schools out there that can help you with learning how to defend yourself. Learning Brazilian Jiu-Jitsu and MMA is one of those ways.
One of the schools I have attended in the past is BJJ Lifestyle Academy in Belleville, Illinois. The owner, “Brazilian” Mike Rethmeyer (Blackbelt) is a down to earth guy and an excellent instructor. He is a three time Pan American Jiu-Jitsu medalist, has won numerous championships including NAGA, The Arnold Classic and The Relson Gracie US Nationals. Mike has many students and currently operates two schools in the Metroeast (Belleville, IL) and St Louis area (Oakville, MO). Please check him out at stlouisnovauniao.com. His YouTube channel has many videos to help you learn as well. I believe the best way to learn is to attend his classes.
Additionally, Mike teaches a variety of MMA classes and if you are military or want to learn what they do – go here and you will not be disappointed. If you are interested in attending his classes, please contact him at 314-780-4222 or e-mail him at firstname.lastname@example.org. Please tell him you learned about his school from Defend Your World blog!