Personal Trainer Certification and Group Exercise Certification can help you. You can see their website and get more information at www.afaa.com
Join a club or take classes at a leisure centre. It isn't a safe sport to learn without support from a qualified coach.
You can teach them tracks and then they learn it, keep saying it to them then when they do the track, you pet them on there head.then when you do it a lot, you will get a bone then you feed it to the dog. Then you will get trainer points. I hop this helped you! :)
You can learn about how to become a personal trainer on the following site: http://www.acefitness.org/. They have a ton of helpful info.
by rewarding them
A personal trainer would definitely be able to help you stretch without causing harm to yourself. You can also learn techniques online at http://www.webmd.com/fitness-exercise/features/new-ideas-on-proper-stretching-techniques
to better learn
Every odd level you can got to the trainer and learn new skills
Learn how to train dogs, first?
You are the trainer. You decide You are the trainer,you decide
To be more specific, you pick a sword style and learn it. Then at either a dojo (place that teaches swordsmanship) or an organization like amgard or the SCA put your skills to the test in a combat game.
The AFPA - American Fitness Professionals & Associates has programs available to become licensed as a personal trainer.