Forget the karate uniforms. Forget the plastic guns and squishy knives. Forget the chops to the throat and all of the other images that come to mind with the phrase, "self defense". Forget everything associated with the phrase, "self defense". It's been ruined by fakes, with no sense of humor, too:).
1) Learn how to use and carry a gun, pepper spray etc.
2) Learn what to do if #1 fails.
These self-defense classes are included in the unlimited membership.