My borther got my kids a jack russell and he is 8weeks old. I was wondering the best way to train such a hipper dog.
Find a good trainer and begin in a puppy class. From there, you can go to the next level of obedience training. But a puppy class will give you a good foundation of obedience to work from.
I would not personally waste my time with any kind of "pet supply" store classes tho. They might get you some very basics, but they won't get you very far. They are also way more expensive than a lot of private instructors.
When I got my Border Collie, I wanted to get in to agility training. I found an excellent trainer who offered a puppy class in obedience with introduction to some agility things, like tunnels, dog walk and teeter, by contacting my local agility club to get trainer referrals. My trainer is excellent, also a breeder and has high titles on her dogs in obedience. I would never bother taking classes from an instructor who has not successfully titled a dog in obedience… it's how I know they actually know how to train a dog properly. She only charges $50 for a 7 week class and the local stores charge around $125 for 6 weeks around here.
Contact a local obedience or agility club and get some referrals from them. They will refer you to trainers they know, have used themselves and trust to be good. The club will likely have members who will offer classes too.