I would invest a great deal of time researching both training and dogs...I would propose a GSD (this isn't a Mal forum). Check out USCA, PSA, SDA, and other options...discover what is in your area.
Regardless the venue, it takes three hearts to train a protection dog...you, your dog, and a decoy/helper. You can be an inexperienced handler and learn to train a dog, however, I would suggest you want an experienced helper....not sure you can get that at home?
India vom Wildhaus
CGC HD/ED a1 Normal
Dayna von Royale BH FO CGC Therapy Dogs, Inc.