Pick a hero you enjoy and build it up. Get a good competitive deck with one hero and then expand from there.. zoo lock, deathrattle hunter, tempo mage.. these are all really good decks to learn with. Definitely wanna try to get the newer adventures, they have good cards. When you buy packs go for either the vanilla packs or the old gods packs. Use your dust towards getting that one deck you like to a more competitive level. Honestly when I first started I leveled all my hero's to 10 against the innkeeper. My tag is T3hi84n2g I'm usually on for an hour or two every night, feel free to send me any questions or a game challenge or whatever. Oh and make sure you complete at least 1 quest when you have 3, and you can reroll a single quest once a day, so say you have a win 3 games with paladin quest and you don't like the paladin.. click the top right corner and it will give you a new random question, but only do it one time per day, or else you will just delete the quest. Good luck and may RNGesus be kind to you!