Where in Middlessex county in new jersey, can i take my 3year old black lab to get trained for bird hunting?

I helped a friend train her first retreiver to find and retreive birds in her backyard, though idk how effective it is since neither of us has ever been hunting yet. it smells out and catches live ducks if you tell it to retreive and it has no dead duck lol. We used dead quail (avaliable frozen on the internet) and started off by playing fetch and just makin the dog love going after birds. Then we would start throwing the bird and holding the dog back till it hit the ground to tell it to retreive. After that, he dog would sit by the master abd the helper would put the bird on the ground about 20 or 30 feet away. Dog would retreive a bird that it hasnt seen fall. Then it would go around the corner with its master and wait for a helper to put it in the yard where the dog can only see it if he rounds the corner. Then the master would command it to retreive (by this time it should know what you want, it just has to go around the corner to see and find it. Lastly, we begun throwing it into brush and then letting the dog go get it once its dissappeared. Lastly, we would put them around in the brush and stuff and tell the dog to retreive. Dog would not have seen the birds being planted, but would have to smell them out. Begin each step easy and make it more difficult. Only move on when the dog can handle it and if he locks up at a step, go back to the last step before moving on again. Always switch it up and never let the dog anticipate things. Throw it in water too. Eventually, you can take your dog out to your hunting ground and shoot the air as a friend throws a bird and have dog retreive birds. All that is left is to take the dog out to an actual hunt. Good luck :)