Dog Training - The Heel Command

The basic obedience commands that every dog must know are - "Heel", "No", "Sit", "Stay", "Down" and "Off". These six commands form the basis of every basic obedience class, and it is vital that you and your dog master these basic commands. These are the fundamentals, and it will be impossible to move onto other commands, or to correct problem behaviors, without having mastered the basics.

Heel
Let’s start with the most basic command of all, the heel command......
 Teaching a dog to heel is the fundamental first step in teaching the dog to walk properly on the leash. The proper place for the dog to walk is at your side, neither lagging behind nor straining to get ahead.
If your dog begins to forge ahead on the lead, gently tug on the leash. This will cause the training collar to tighten and give the dog a gentle reminder to fall back into line. If the dog begins to lag behind, gently urge him forward. A lure or toy is a good tool for the dog that constantly lags behind. Once the dog is consistently walking at your side, try to change your pace and encouraging the dog to match his pace with yours. It should always be the dog who adjusts his pace to you; you should never adjust your pace to meet the needs of the dog.

This video shows you the basics you need when training a dog to heel.