When you are training your dog you always want to carry treats with you so that you can teach what is right and what is wrong. 
One of the first commands that you should teach your dog is to sit. Make sure your dog keeps eye contact with you so that they don’t get distracted by things around them. Sitting is very important because you use it almost anywhere and it helps you teach your dog other commands and tricks. 
Stay is another important command that you should teach your dog, because it helps keep them focused on you and not different distractions. 
Down is also one of the first commands to teach your dog. When you are teaching them to lay down make sure that your dog is in a standing position. NOT sitting. When they are sitting and you tell them to lay down whenever they sit they will immediately lay down. You can get docked a lot of points. 
Finally teaching your dog to heal is one of the last first commands to teach your dog. When you do this take a treat and hold it at your side. You want your dog’s shoulder to be aligned with your hip. They should follow you and the treat.