You seem to be making a very good start at learning. I agree with going to shows. Do you know the differences in the registries? The American Dog Breeders Association, the ADBA does conformation and weight pulling. The dogs that win at these conformation shows tend to be small, lean and muscular. With the average weights around 30 to 50lbs. The United Kennel Club does a lot more in dog sports and conformation. They do agility, obedience, rally as well as weight pull. The dogs that win at their conformation tend to be more heavy, thicker built dogs.
And then the ABKC does American Bullies, which are commonly mistaken for American Pit Bull Terriers. The American Bully has many class sizes for it's conformation pocket, which tend to be very short and thick, classic, which resemble the UKC APBT
dogs, standard which are bigger, thicker dogs and XL which are extreme dogs.
And I guess I should not leave out the AKC which does American Staffordshire Terrier, these dogs closely resemble the APBT
UKC show dogs. Some dogs are even dual registered under both breeds.
American Dog Breeders Association
United Kennel Club: Home
The American Bully Registry
American Kennel Club - akc.org
I urge that you take the time and decide which of the breeds would be best for you. You can also find many shows and events to go to on the websites. Good luck!