Stick with airfields with an actual tower or traffic control. Little planes are numerous and will keep you on your toes, some bush pilot's never turn on their radios.
Welcome to ODT and Georgia! ODNR has out door ranges you can use for plinking (No Drills and a lot Range Rules) for the price of a fishing/hunting license. Too run drills and such you will probably need to hook up with someone who does training or private outdoor ranges, or if you are a hunter...