Black dog system is a trading strategy which is based on the EMA and the MACD. It is a very simple trading strategy. Even the newbie traders can understand the black dog system.
Understanding a system and mastering it with discipline are two different things. Mastering the system is concerned with the practice and the discipline while understanding is having knowledge of something. Knowledge alone is not sufficient to succeed in trading business.
Only the key to success in trading is self discipline. You should also have a proven strategy/system that really works. It doesn’t make sense if you are practicing the system with full discipline and dedication when the system itself is a failure.
Blackdog is proven and tested system though this is a tweaked version. You can test on various scripts and time frames. Even experiment with position sizing, entry type.