So you've just finished the six-part tutorial for Hearthstone. (It's still six battles, right?) Or maybe you've gotten to playing some games in Practice Mode. Or Play Mode. Who knows, I don't know your life. Point is, ya basically just started playing Hearthstone!
What you really want to know is: HOW DO I GET MORE CARDS?!
I guess if you know what "Shop" means and you've clicked on that button, you know that you can buy a pack of 5 cards for 100 gold.
So now you're asking: HOW DO I GET GOLD?!
After you complete the quests First Blood and The Duelist (you get these after completing the tutorial), you'll start getting "daily" quests (i.e. 1 quest a day, with a cap of 3 at a time). These net you anywhere from 40 to 100 gold each, and you'll see them when you log in.
Additionally, you get 10 gold for every 3 games you win in Play Mode (also with a cap of 100 gold for 30 games won per day).
However! There are some ways to get gold/packs that may not be obvious to new players.
These are one-time quests (meaning you only get the rewards once) called achievements. I italicized that, so they must all be impressive and consequently difficult to complete, right? Not true! Some achievements are easy, even if you haven't opened a single pack.
Here is how so listen gud.
(Or, you know, here are the achievements, their rewards, and how to complete them.)
Ready to Go! (100 gold) - Unlock every Hero.
You can unlock a hero by beating it in any mode, though Practice is easiest.
Level Up (1 pack) - Get any class to level 10.
You gain experience and level up a hero simply by completing a game in any mode using that hero. Mage is probably easiest since you level it up some in the tutorial, but eventually...
Got the Basics! (100 gold) - Collect every card in the Basic Set.
This actually means get every class to level 10, since you unlock new basic class cards every even level until 10. Some of them are really good, so please do this!
Crushed Them All! (100 gold) - Defeat every Expert AI Hero.
You unlock the Expert AI in Practice Mode after either beating all the normal AI or unlocking all the heroes. (I unlocked all the heroes by beating the normal AI, hence my uncertainty.) This is the only achievement that you might have to work a little harder on, but the Expert AI is definitely beatable with just the basics! (I also suggest keeping track of which Expert AIs you've defeated while you're completing this one, since Hearthstone sadly does not keep track for you.)
There you have it! And have no fear of being matched with some guy who decided to swing his legendary-stuffed deck in Casual, for you need not step into Play Mode at all for these achievements. :D
P.S. Got an iPad, or a friend with an iPad willing to download Hearthstone?
iPack (1 pack) - Play a game on iPad.
This achievement can be completed in Practice Mode too!