To use this Massive Darkness 2 expansion, first make sure you have the Massive Darkness 2 core game. Then, unpack the expansion and add the new components like the Bard and Tinkerer classes with their heroes, and the Metal Angel roaming monster to your core game setup. When playing, follow the special rules for each class. The Bards can use their music abilities as described in the rules to affect enemies and allies, while the Tinkerers can build weapons and gadgets during the game. As for maintenance, keep the cards and miniatures in a dry and clean place. Avoid bending the cards and try not to damage the miniatures. If you have any other questions during use, don't hesitate to contact The Game Steward.