Learning to fly your dragon is an important aspect of Century: Age of Ashes. You will need to be able to hunt down your enemies and escape those that pursue you. One thing that will help you do these is your dragon's ability to boost. Boosting uses stamina, which is a finite meter. But you can recharge this.
To recharge your stamina in Century: Age of Ashes, you will need to fly low and seek out glowing energy trails. These can be found both in water and on land. Flying over these will refill your boost meter. You can also refill your stamina by flying into air columns. This meter is represented by four crystals at the bottom of your screen.
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Boosting allows you to close the distance between an enemy or lets you escape an enemy who is hot on your tail. As such, you will want to keep an eye on this meter and make sure your stamina is full. A boost in the right situation could be the difference between life and death.
Spotting boost trails is fairly easy as their glowing light gives their location away. Just because that when you are flying low to the ground that you don't accidentally run into any rocks or walls!
For more information on Century: Age of Ashes, check out Are they dragons or wyverns in Century: Age of Ashes and Is Century: Age of Ashes pay to win? on Pro Game Guides.