Hi
My advise would be to find a local Gundog training class,they do have Tests an Elementary test and an advanced test.
They usually also run working tests out of the shooting season,which are baised on dummies not live game.
You have also got to introduce your dog to the gun,being shot over can be traumatic if your dog is not intoduced properly.
You have also got to be prepared to handle dead and sometimes wounded game.
Being in the beating line is a hard but enjoyable job if you have a well trained dog