In addition to its statistics, many models have special rules which separate them out from other models. These will be listed under ‘MARs’ or ‘Model Assigned Rules’ in the model’s statistics.
For your first few games we recommend that you ignore these extra rules whilst you get to grips with the basics of the game. Once you are comfortable with the core rules you can bring these in to play. They add colour to the game, and there are a great number of tactics involved in making the most of your special rules, whilst preventing your opponent from exploiting theirs.