Hearthpwn

Hi, i just start playing again few days ago, i read that there is a rotation and alot of cards will be retired. So i like some advice to build a good deck and how to get starting.

I got 3000 dust and 800 gold.

I use this deck for now, don't have any fav class . 

http://www.hearthpwn.com/decks/1041418-priest