I ran an akc show kennel for rough collies, smooth collies, had a couple of fox terriers at times, the odd and end breed occasionally. I've had my dogs shown at westminster, a couple won the breed there.
I used to breed Jack Russel Terriers. Got out of the biz a long time ago though.
you are...
we call their crates a "house". they all know where to go when we say "get in your house".
I've only ever trained for the show ring and here at home, so don't know much about the details of trick training. I would imagine it to be much the same. Break it down into little chunks and start there.
You have to decide on the name of the command. Heck you could call the crate"salad" and as long as you use the same word to get that action, it will train to that.
For example, if you want the pup to learn to sit on a mat, you can use "mat", then "sit".
The real trick to training is to be...