For new players it's almost always hard to make solid deck that can reach good rank.
This deck is F2P version of midrange hunter changed a bit with new card options to fit into the new expansion meta.
Flanking Strike - a great card against other aggro decks but not only! Let us to trade without sacrifice from our minions and give us more control over the board.
Keep low cost minions as:
Also remember to keep Golakka Crawler cause almost every aggro deck run pirates.
Never keep Tracking it's late game tool helping you to draw better.
If you need some deck add me on battle.net (Ulgrim #2661) and make with me something unique.