First of all take a treat, hold it in your hand and wrap your fingers around it and no matter how much your dog tries to get at it, bite your hand or paw at your hand you mustn't let him have it. What you have to wait for is the minute that his nose comes away from your hand. That's what you're rewarding him for. He needs to know that he's never ever going to get a treat by biting your hand.
As part of your puppy’s training, then, you should do everything you can to ensure that your puppy can’t get into trouble in the first place. That way you can avoid giving your puppy lots of ‘negative’ attention which might inadvertently encourage his bad behaviour. For example, if you use a crate, or confine your puppy to one room of the house, he is far less likely to get into trouble chewing something he shouldn’t, or peeing somewhere he shouldn’t. more
Like small children, puppies have short attention spans and get tired quickly. Keep your puppy training sessions short – 5 to 10 minutes is enough – but regular. Two or three short training sessions every day is ideal. And, remember, you can build in the ‘come’ command throughout the day; for example, when you want to feed your puppy or play with him.
Just as a child needs a caring parent; an athletic team needs a coach; your puppy needs a leader and a clear social hierarchy. If you do not take up the role of leader, your dog will; and you will end up with an unruly, disobedient dog. Many people try to win their new puppy's love by letting the puppy always have its way. Buckets of affection is a wonderful thing for most puppies, but it must be tempered with respect.