How long are your sessions? Your dog is what, 6 or 7 weeks now? I would keep training sessions very fun, and maybe 1 or 2 minutes, and that's it. And that's working on the absolute basics. Also, for many dogs, a treat is not the best reward. Find whatever motivates your dog most, and use that as a reward. Don't be afraid to think outside the box, rewards can be anything. A pat on the head, running around in the yard, getting to nap on the couch, chewing a stick... I would also just keep in mind that at this age, there is no attention span. So, unless you're sure your pup is not food motivated, I would keep trying with shorter sessions. This is one of my sessions 3 days after we brought Dakota home. Looks impressive, considering Dakota was a rescue in a kill shelter at 6 weeks, with zero human attention and/or training. At this point, I believe she understood "sit", but that was about it. How was she instantly responding to an off lead recall on day 3? You can see me using things she likes to do to my advantage. When I tell her "come", she wasn't responding to "come', per se... She was responding to me crouching down, and if she saw me crouched like that, she would come over without a command. With her having such a rough start to life, she LOVED our attention. Since she was so small, I would often crouch down like that to pet, rub, and love her. So, when she saw me crouched, she began to associate the crouching with the loving. Once I learned that, I started using that motion to get her to associate the word with the behavior. Over time, I crouched less and less, until I was able to give the command without bending down at all. This is how I like to train a dog... Take your dogs natural instincts, desires, abilities, etc. and use them to your advantage. The more you learn your dog, the easier it will be to train him effectively. I don't believe any method works for every dog right out of the box. They may work fine, but not to their full potential by making a few slight modifications.
http://www.youtube.com/watch?v=kNx6MIrPQdw
http://www.youtube.com/watch?v=kNx6MIrPQdw