Start with what the breeder sent you home with. Changing foods is stressful, as is moving away from the only home the puppy has known, and losing all his siblings... so it's best to let them settle in to their new digs for a few days before switching foods to the version you want to use long term.
dogfoodadvisor.com has all sorts of good information on foods. See what's available in your area and which one looks good to you... then check out the ingredients at dogfoodadvisor.com.
That, and do a search here on the forum, this is an often asked question.
