No dogs learn their whole life. I train dogs from 8 weeks and up
It's tough to say some issues take 1 or 2 sessions, some more complex take 10 or more
I evaluate your dog and how best to train, but my goal is to train you to train your dog
I use the most comfortable type that gives safety and control. I mainly use the Easy Walk harness. I NEVER use choke chains, ecollars or pinch/prong collars.
Over my 25 plus years I've worked with most breeds. There's a huge range of personalities in every breed.
I have my "rules" of dog training. Some of the most important are being consistent, find what motivates the dog, reward what you like and ignore what you don't and make training fun.