You click the second they do what you want. Then you give a treat. After they do want you want a few times you can add a hand signal or verbal command to it. Eventually you phase out the click & treating.
Today I used the touch to have Hannah ring the Poochie Bell to go outside to potty. She did great. Spencer would do touch but to ring the bell he had to stand on his hind legs & he didn't want to do it. Will try again tomorrow.
I want Hannah & Spencer to go in a litter box outside but they won't go in the litter box. But when they do, I'll be clicking.
If you go to the web site on a previous post & the first lesson is touch. It teaches you to clicker train while teaching the dog as well. It's more shaping them into doing what you want. The touch command is the easiest to learn!
I took my Mom's dog to obedience school & when walking, if they pulled, we were to pull back & get them back in line. This training you reward when you have a loose leash. It is different.