Definitely tether to you when little. It helps with potty training to catch them in the act and reinforce going potty outside. Crate is great but again at least let young ones out every 4 hours.
A good tip is a quiet puppy is NEVER a good thing!!
Athena- Long Coat GSD -CGC
Sinister Black- GSD- AKC S.T.A.R. puppy