The best way forward is to study Wide Directional Pushing and Slapping at home first, Master the concepts and finish the course. Afterwards you will be more prepared to start your new career in Pdr or perhaps continue to some one on one personal training and get more out of it because of this initial study.  Bottom line is I teach a completely different method than what is generally taught in Pdr.  I don't use sharp tools of any kind and believe it is one the main reason why many don't make it in this profession.  You need to work on every job and every car, but sharp tools don't work on old classic cars etc.  Get trained to fully understand the metal movement and how to do it in a way that raises the original orange peel and not one where you are trying to create a new one.  The results are cleaner repairs and faster time on the damage.