You have already been given some great advice here and being a GSD owner of 25 years standing, I would just add that they are a very loyal breed, and will usually bond extremely tightly with their owners.
My husband slept with our puppy for the first three nights. Not actually in Luika's crate
, but by the side of it.
You need to avoid separation anxiety, which can happen to any dog. I personally, would never have a dog sleeping in my bedroom, it is a personal choice and I have chosen not to do it. Why not buy a book on GSD care. Each breed has their own little foibles and it helps to know the signs.
I know I am biased but LOVE the breed and a well adjusted GSD is the best