You will hatch a dragon towards the beginning of the game. To strengthen it, feed it to increase its experience. It will become stronger when it levels up. You can obtain dragon food as quest or campaign rewards or purchase it with rubies. You can equip your dragon with armor pieces obtained from campaign missions. When your dragon is level 4, it can be sent to the Dragon Cave to search for treasure. Note: Your dragon cannot help you attack or defend if it is searching for treasure.
Production
You have three different production queues, with research, training, and building tabs. You can have up to three different simultaneous tasks. When waiting for a task to finish, queue another task on a different tab. Always keep your city's production active.
Resources
Create a Kabam account on their site. Not only will you retain your progress when playing the game across different platforms, when you link your game to it you will be awarded with 25 rubies and 80,000 food, wood, metal, and stone.
Troops
In order to attack enemies, you must form an attack party. Attack Parties consist of a general, an optional dragon, and troops. Including a dragon will increase your chances of winning. You can also improve the strength of generals by sacrificing other generals. Some general also have passive faction buffs. To activate them, the general must be in the appropriate slot (Amazon, Primus, Zolmet, or Solerian).