Have a look for training classes - it's a great way to learn, and they teach you to teach your puppy so you should come away each week with new things to practise. I'd recommend a course that works toward the KC Good Citizen awards. Have a look at
Association of Pet Dog Trainers website, and arrange to watch a class before choosing - some classes are better than others :). Alternatively let us know where in the country you are and perhaps someone could give you a recommendation
In the meantime - get a copy of
The Puppy Primer by Patricia Mcconnell. It's an excellent book with lots of easy-to-understand, easy-to-apply exercises and techniques for you and your puppy. Highly recommended A++
You can also have a look at The Bite Stops Here, search on this site as it's always being mentioned (for good reason :) - it works )