Good idea having the dogs meet on neutral turf. Take a few days to let the dogs get to know each other once you are at home. This will also give the new dog some time getting used to you. take the dogs for walks these first few days. If the new member is a shy, she will gain boldness from your other dog. You can keep an eye on her and see how she reacts to various places you take her. You can also she how she reacts to everyday noises in the field. If she handles things well you can add things like hand clapping, duck and goose calls while you are walking. This will get her used to noises coming from behind her. Again the older dog will help her boldness.
This is all part of training along with housetraining maybe. For the hunting part, I would start with introduction. Both for birds/guns and obedience. For the bird training I would start with pigeons. Use a locked wing pigeon, tease the dog with it and then toss it. You are looking for drive and desire. The important thing to remember is, the only thing we are looking for the dog to chase the bird. Don’t be concerned about retrieving yet. I like doing this in an area where the dog can’t run though. Set up a barrier or lane where the only option is for the dog to come back in your direction. If she does fetch it up thats fine but don’t use any type of correction if she doesn’t. That would be the start to bird introductuion. If you can, do this a few times a day- short sessions.
While you are doing this you can also start your obedience introduction. Say you do a bird session in the morning then do a obedience session in the afternoon. Same thing applies with obedience. During the introduction phase, we are showing the dog what the command means. We do not want to use any pressure until we are sure the dog understands the command. Once you have the dog birdy and used to gunfire, you then can go back and start formal obedience training.
Give me a shout if you need specifics on the training.
. I have an 11 year lab mix that I got from the Humane Society when she was 2. i have been holding off bringing another dog into the mix out of respect for her. The opportunity has come and the time is right, I am picking the dog up in WI and plan on bringing my current dog along so the two can meet on neutral turf. The new pup is 1 1/2 yrs old. The timing is right in that I have 9 months to work with her before the next hunting season. Any input on a training regime that I might follow would be appreciated. I am also looking for ideas and time frames to get her ready for gunshot. I look forward to your input. I feel like a little kid at christmas 
i hope the old gal hangs in there for a few more years to show the youngster the ropes. Double dog power 
Have Fun! 
Diet of cheese and beer for all