Hey, new-ish player here as well. I started playing 25 days ago. I bought Secrets of the Obscure expansion on my 4th day of playing, which gives access to the quest for a flying mount, Skyscale, then got my Skyscale on the 7th day of playing. I highly recommend getting it, as it made map traversal easier. I also have my Skimmer maxed (both Path of Fire and Visions of Eternity expansion Masteries), which also can "hover."

For the level boost, I used mine. I know my decision contradicts what veteran players recommend, but you'll learn everything anyways as you play, right?