The second you get them!  Your puppy is learning 24/7 whether it be good or bad.  You must offer proper instruction from their perspective immediately.  For example puppies love to jump up on us, and our first reaction is to direct them down.  By touching them is actually rewarding the behavior.  They think you are simply petting them!  So be careful or you can actually reward these behaviors and teach your puppy undesirable behaviors.