We got him from the breeder when he was 7 weeks old. Now he is so active and can never calm down when we try to train him. He only knows how to sit down and stay a little bit.
We see on youtube that there are so many smart pups that can do lots of tricks at his age.
1. Go with the flow.
2. Use treats - and only give treats for something the puppy does that you want to encourage, not just because.
3. Like LibertyME said above, don't compare your puppy to other people's. The experience level of the owners and spare time makes a big difference in how quickly the puppies develop training brains.
When you watch those videos - learn the handling skills of those people or what they are doing to get the puppies to learn.... and figure it out away from your puppy. When you train your puppy, keep it short. Only 3 reps and quit. They are absolute SPONGES between 8 weeks and 15 weeks especially, but have short attention spans.
Never overdo or get frustrated while training. If it's not working, stop and do something else.
Between 8 weeks and 20 weeks - this is the time you want to train your puppy to walk nice on leash, react to your voice/praise, learn your hands are treat givers, and that when you want to train it's going to be FUN every time you train (several quick 1-5 minute sessions a day).