The dog needs to understand the basic commands. Briards are very intelligent and respond well to training when the correct methods are used. If in doubt err on the positive side. If you are wrong you can always correct later. However, it is hard to take back an inappropriate correction.
Briards have a good memory and a strong sense of fairness.
If they believe that they were corrected unfairly, they often shut down and stop working. So be positive, consistent, and upbeat in training. There is no question that training the Briard can be difficult, particularly if the wrong approach is used. But when the method of training is adapted to the unique temperament of the Briard, wonderful results can occur, as evidenced by the photos. Briards are working dogs and seem to enjoy having a job or a function to perform.