working on my second f2p account, am i better off buying classic packs at this point? posting stats of my collection below, but i have close to half of the classic collection, though very few epic and only tirion as a legend. mostly playing midrange hunter right now to farm as much gold as quickly as possible and try and get to rank 10 for end of season rewards. Kindly Grandmother is the only card for hunter i would be getting, but it would still expand my collection nicely. I only have 2 secret for secret hunter, which is basically face hunter and I'm not sure I see myself playing that version of the deck very much. Sadly I need 1400 gold to get to the wing with grandmother :(
So, is classic better or should I focus on ONiK or one of the other expansions? as far as my hunter deck goes, i feel like the cards i need to improve it the most are Rat Pack and Eaglehorn Bow (i have enough dust to craft the bows) and have all the cards for midrange hunter from Un'Goro already thanks to the free packs they gave us and crafted a few that i needed.
Download this program called "innkeeper". There is a link to the site from the main nav bar, or just go to: http://www.innkeeper.com/. It runs in the background while you play hearthstone, and if your collection changes (open a pack, craft a card, disenchant a card) it will sync with your account here on hearthpwn. Then on your collection page here, you can see all those stats (to get to the collection page, click on your user name in the top left and you'll see the link for "Collection").
It has other features too, so you may want to check it out fully and see how else it can help you. Personally, I love it for the collection part of it.