Change:  and endorsed by an organization like The National Association of Dog Obedience Instructors. There are organziations that will certify anyone as long as they pay their yearly dues, and they have no requirements for skill or experience. If you have a puppy, you may want to investigate a puppy kindergarten   View changes from previous version. (Word count: 406)

Change: Investigate the classes beforehand and find the one that is right for you. Some are aimed at first time dog owners and others will be   View changes from previous version. (Word count: 229)