If someone wants to eventually own more intense dogs, the Terriers are a great way to start. They're giant guardians in a compact body, lol! Every bit as headstrong and stubborn as any of the molossers, and great to train owners, lol!
Showpugs is right. There are novice owners, and then there are NOVICE owners, lol! Some people may own dogs for forty years and still never be ready to own a Bull Mastiff, or Dobie or GSD, while others have the dedication and strength of will and mind to jump right in and start out with a German Shepherd - or a Giant Schnauzer!