You are the guardian of the puppy. Go to Leerburg.com and read the free articles about pack structure, being your pups leader..just tons of free info. And great to purchase training videos. Forrest Micke, student of Micheal Ellis, explains things in an easier to understand way. If you are not used to marker based balanced training. Do not let the older dog dominate your pup. Make sure the pup spends time in either it's crate or a wire exercise pen to give the older dog a break and to spend time with just him. Both of their worlds have been turned upside down.
dogbyte Cathy, Rossi ( the Dutch shepherd) and Gunny (the Czech/DDR GSD) with Zoey, Chance,Xara,Gracie, and Jaden snuggled deep within my heart