I agree with Virgo. Also, its best to stay at 50 cards. Don't go over if you can help it and if you do - don't by much. The percentage that you will draw one of the cards you need/want starts to drop big time the more cards you pack in your deck.
I also highly suggest creating an account on deckbox.org
It is so much easier to view your inventory and create decks digitally than it is scattering cards all over your table top. This has been a life saver for me.
Feel free to peruse/use any of my decks for ideas - http://deckbox.org/users/sammann11
Have fun and welcome to the game!