Training a dog isn't something you do and are done with. Training a dog lasts for as long as you keep it up and are consistent in the results you expect. It takes constant reinforcement and repetition. You train your dog to sit and every time you give the command and he does, you are training. What is most important is that you continue to reward your dog whether you use an "atta boy", a treat, or a pat.
Some people call them "Bark Collars" but, barking collars don't bark and aren't only used to stop dogs from barking. They are shock collars. Their sole purpose is not to train but to punish undesirable behavior with pain.
The snow had just started falling and it was the first time I had ever driven in snow. The party was at a house rented by several young men. One of them owned a female dog that was half Golden Lab and half German Shepherd. Another had a male dog that was half Doberman and half Greyhound. The two dogs got together and ended up with a family of 7 puppies. The boys managed to find a home for 6 of them, but there was one left over.
Before we brought home our Airedale puppy, Bailey. We researched dog breeds to be sure our puppy had the right temperament, the right health requirements, and that he would grow to the right sized dog. One thing we didn't research is how quickly poo can pile up from one little puppy. The EPA estimates that one dog can excrete 274 pounds of waste per year, depending on what and how much the dog eats. We think Bailey reached that limit in his first 6 months!