Different types of GSDs look and behave differently, and to some degree, have different needs, too. Learn about these differences and ascertain what it is you really want from the dog. There are American line dogs, German line dogs, other European line dogs, etc. Research the different types and their general attributes before asking for a certain type. GSDs need exercise, socialization, and mental stimulation almost every day to be on their best behavior.
Training never stops.
Before getting a dog, it's best to think about your lifestyle and your family's lifestyle. If you answer yes to any of these questions, please reconsider getting a German Shepherd Dog now. Wait until your circumstances change. You'll be glad you did, and so will any dog you may adopt. You need a fenced area attached to your home for the dog's safety.