I've just enrolled our GSD into puppy kindergarten at a local kennel club. She will start at almost 10 weeks of age after her 2nd round of shots. The contact person for the club explained that this class will be part socialization, but also beginning obedience (i.e. not just free puppy play) and recommended that I go ahead and purchase either a nylon or metal slip collar. I would think the corrections with such a collar on a dog so young would be very minimal, but I'm wondering if this is a bit odd, or if used correctly is perfectly fine to get the dog accustomed to it early? This was not the class instructor, so I'm thinking I should wait until the first day of class and see what they personally recommend. Any thoughts?