You can purchase this pet from Dawn-Seeker Krisek in Vol’mar (Cords 60.46) when Exalted with The Order of the Awakened for 2000 Apexis Crystals.
Dawn-Seeker Krisek is standing next to the flight master.
Blazing Firehawk Talents
As with all battle pets you will start out with the first talent and open the others as you level this pet. Talents will open at levels 2, 4, 10, 15, 20.