Exactly!

If you are after a few tips there are loads of websites, but I would say...

- Don't spend 100 Gold on individual packs. Instead save up another 50G and do an Arena run instead. This will teach you about deck building and how to play effectively; plus you will always get a pack of cards even if you lose 3 games in a row, and you will always get some other little perks - like some Dust or Gold, or even a card. And if you win 7 games in an Arena run you will get at least 150G back, so that's a 'free' pack of cards.

- Make sure you log in every day to get your daily Quest (up to 3 total). And if you have a low value quest (40G reward) consider discarding it, as a replacement quest may be worth 60G or 100G

- Make sure you level every character up to 10 to unlock all the Basic cards for your decks

- Once you are familiar with all the Heroes, consider focusing on two or three Heroes and building good decks for each. And for those Heroes you are not playing, consider Disenchanting the Expert cards you have for them for Dust, which will allow you to craft cards for your main Heroes.

- Craft the useful General cards before specific Hero cards

- Don't worry about what meta game is going on this week. Cards come in and drop out of favour regularly, so trying to either be part of the meta, or combat the meta is fun but pointless if it causes you to spend real money trying to get this weeks favourite card. (For example. Tinkmaster and Pagle were really common cards a few days ago and Pagle alone would cost 1600 Dust to craft. Blizz saw this and nerfed both cards, so their use will drop massively in the next few days)

- View your Life Points as just another resource, like Mana. (For example, it may be better to clear an enemy Minion using a Weapon and taking some damage, rather than trade your Minions if it leaves you in a strong position on the board - but be aware of stuff like a Mage's Pyroblast (10 damage spell for 10 Mana) or Fireballs (6 damage spell for 4 Mana)

GLHF!