The best training I have ever seen as far as dealing with puppy biting was by a female wolf/shepherd we had (and we were blessed to have had her!). She contributed to the raising of 2 or 3 of our puppies, and she mannered them very well. She never drew blood, but she would bite and hold them by the neck or whole head, depending on how large the puppy was, and she would hold them until the puppy relaxed, then she would let them go. She would also take one big front foot and push them down to the floor, and again hold them until they relaxed, then let them go. For the serious biters, that worked for us. Yelping or crying in pain when a puppy bit did not seem to work for the real determined ones. And a vocal correction, no matter how loud, often only brings a loud bark back at you, sounding almost as though he is imitating you! Again, you're going to read all sorts of advice, from some people much more knowledgeable than me, but imitating our old Amber's methods worked for us.
The only reassuring thing I can tell you is that this will pass!
I am not an expert either. But one thing that I did learn is that all dogs act differently and respond to certain training methods differently than others. However, I do believe that following the actions and discipline of a mother dog (how she disciplines her pups and teaches them manners) is the most consistant best way. This is just my opinion, but it has work extremely well with training my dogs.
I read so many books and talked to so many people about how to train and how to make the dog happy and what to feed the dog, etc.
After trying several different approaches (clicker, reward/treat, positive reinforcement), I went back to the basics. Solid discipline and consistancy. I teach my puppy a command using positive methods (no physical corrections) until they know and understand the command and until they are at least 16 to 20 weeks old. Then I use physical correction to reinforce commands when they don't immediately obey and to correct them when they misbehave.
I used the method that Susan described above for correcting biting and jumping. It worked very well. I would simply grab the dog by the back of the neck and hold them down until they calm down.
Most people think my methods are cruel and unnecessary, but it has worked very well for training my dogs. They listen and obey very well even when highly distracted with other dogs and people running around.
Bottomline: don't get too caught up with all the information floating around. Common sense and logic is always the best approach.
Good luck and have fun with your dog.