What cross breed do you think my border collie is?

I was thinking she has a bit of Kelpie. I don’t think she is pure-bred. I got her from an animal rescue but they don’t know much about her.

http://www.tiikoni.com/tis/view/?id=aabf85c
Well they said she was border collie x unknown. Her ears look a bit Kelpie-ish, I thought.

What is the best breed of dog for a first time trainer?

I am about to graduate high school in june and i want to become a dog trainer…i havent had luck finding a school to go to yet but when i do i want to know the breed of dog that would be easiest for a first timer.

What is a good dog for a first time owner?

Generally- Low matinence, good with younger and older kids, easy to train and all around easy to own.

Any breeds in mind?