Dogs and especially puppies are pretty easy to train so as an owner you just need to be sure you're getting advice from the type of trainer who suits you. If you've hired someone you don't trust, who you're not confident with or just don't understand, you need to change.
There are a couple of different Dog Training Methods and they are very different so try to work out what's best for you and then find the right person to help. Here's some basic information one of the methods - Positive/Reward Based Dog Training
POSITIVE REINFORCEMENT DOG TRAINING (reward/relationship-based)
Reward based and is in line with the latest research in dog behaviour
Good for people who are interested in developing a strong bond with their pet dog and are happy to work together as a team with rewards for good behaviour
Focus is on - general obedience and manners, emotional self control, focus under distraction and teaching the dog how to make the right choices
Unwanted behaviours are either ignored, redirected and/or incompatible behaviours taught
Terminology - teach, guide, lead, support, reward, redirect, ignore, encourage, ask, social groups, unwanted behaviour
Other - Reward based training doesn’t require physical strength to achieve results. You need consistency and a desire to learn and connect with your dog. To truly adopt this philosophy you teach how to make, and want to make, the right choices. Rewards include praise, treats and life rewards. Punishment and prevention is used but not by harsh physical means. Very solid skills are achieved in this way but it can take a little longer and is hard for some people to grasp. All dogs love learning this way as do their humans.