German Shepherd and new adopted puppy

Question
Hello,

I will start with background info :) I have an 11 month old German shepherd, marshall (male, neutered). For the most part he is a very well-behaved dog. Walks well on a leash, sits, stays, comes, etc. However when around other dogs, especially those that he knows, he is very hyper. He doesn't listen as well, wants always to play, nip. Kind of a "won't let up" attitude, even when the other dog has had enough. If I put his pinch collar on he is calmer, but whines constantly. My first question is regarding how to get him to be calmer around other dogs and be more respectful.

Now for the "main" issue. lol. We just adopted an 8 wk old collie/husky/terrier mix, jack (male). yikes. We are working on crate training, potty training, etc, and he's still getting adjusted because we got him only a few days ago. I know this may be premature, but I really want to have these dogs get along and I'm pulling my hair out! Usually in these situations the new puppy is supposed to be the "annoying" one...but marshall is the one who won't stop pestering the puppy. Shoving his nose into him constantly and knocking him over, pawing at him when he walks around, always getting too excited. When he nips at jack, he usually growls and nips back (I think he's scared maybe?). Then marshall barks and jack barks and all heck breaks loose. It's then when I have trouble getting the big one to stop barking (which is one of the other behavior problems I have with him. sometimes he doesn't like to obey and be quiet, like when the doorbell rings.)

I know I've rambled on a lot of information here, and this is the first time I've owned more than 1 dog. If I put leashes on both dogs they are calm around each other, but I don't know if that's the right way to teach them how to interact with each other in the house. (Most of this behavior occurs in the house. Outside they are much better).

Any suggestions or information you can give me would be great. I need some reassurance that it's possible for these 2 to get along and be lifetime friends!!

Thank you very much.

Christian

Answer
I think the best way to solve this issue with Marshall is to take him to obedience classes,as a trainer can show you the best way to correct your dog when he acts like that as each dog is different,and also getting him used to a bunch of dogs in the class will help him get used to dogs and will also get him to see other dogs are no big deal

Also for now you can either continue using a pinch collar or use a choke chain and when he acts up pull him back with a leash and say 'leave it' loud and firm-this also goes for him bothering the puppy

I think they will get along Jack is just telling Marshall he's had enough