First of all, make sure your dog is safe. A sturdy collar is mandatory so that it won't fall off and lose his ID tags. The tag should display the owner's phone number as well as the dog's name. Information regarding dog tags can be found in veterinarian's offices and on the back of most dog treat boxes. Safety also means your yard is adequately fenced and there's a leash attached to his collar when you take him out for a walk.
Training is important.
Make sure he's taught to respond to simple commands such as 'sit', 'no', 'heel', and 'come'. You can't go wrong with those four words. Having your dog learn tricks is secondary to making sure he minds his manners. Clean water and good food is essential for a healthy dog. Check the back of the dog food can or sack of food to ascertain he's getting good nutrients, vitamins and minerals and not a lot of fat.