That is a really broad brush stroke.
First and foremost, know the law inside and out when it comes to lethal force and concealed carry in Ohio.
As for the firearm, train, practice, and train, practice some more! Get to the point you can hit exactly what you need to on command. Draw from the holster ALOT! That first shot from the holster will most likely be the most important one if something really happens.
Learn proper technique for hand switching and be proficient with your non dominant hand. Most people underestimate how important it is.
This is just the tip of the iceberg if you want to truely be ready. Above all....be situationally aware. Keeping yourself out of a gun fight is betting than being in one!