I don't have any experience with clicker training.
Australian Shepherds are a very smart and active breed. They were bred to work on farms for long hours. You will need to give your new puppy plenty of exercise if you want her to be calm enough to accept training. You can make training part of her exercise as well.
I agree that training is usually easier than you'd think if you are very consistent and use simple commands. An easy way is to use words each time you do something. For example, when I walked my dog, each time we'd come to street crossing, I'd say stop as we came to a halt. In no time, my dog picked up on what "stop" meant, and she'd freeze any time I said stop. I didn't have to do training exercises or anything. She learned a lot of words like upstairs, downstairs, your food, and your bed without me really doing much work. The only trick was to use those words constantly and consistently.
My dog was a Great Pyrenees, a breed known for being stubborn and hard to train. They are livestock guardians who were bred to watch over animals by themselves rather than to take orders from humans. I had her so well trained that she could run around off her leash, something I was told was impossible with GPs. (I only allowed her to do this in certain very safe places.) She understood a decent number of words and was very well behaved.
Hope this helps. Good luck with your new puppy!