Hearthstone is no easy game, I'll tell you. I have started to play it few weeks ago, and made it as far as Rank 9, though. The season ends in 8 days, so it's unlikely for me to reach Legend rank in this season due to sheer pressure of Legendary cards of which I have only one.
But how far you've progressed? Hearthstone is a free game, so tell everyone about your achievements and your favorite deck! I use Shaman deck to climb the ladder.