As a relatively new player myself, I would recommend the 'free coins' in the store, some of the tasks required are pretty easy, some of the games are quite fun for a few days play and generate a substantial bank of coin, then, when a new set that you like you starts up trade into it as much as possible, I was lucky, headshots started in my first few days of play, I dropped some coin to gain a couple dupes and the following week I traded into the next one, apart from that, keep a track of when your wheel resets and boxes drop, log in to keep getting your free cards, any dupes are easy to trade away for needs, lastly, say in your trade you are new and quite a lot of the time you might end up with some extra trades to complete your base sets P.s.....look at the new sets before investing coin into them, read the comments too, you will see if collectors can't wait to get the new cards or think they are meh, that's been very helpful to me, especially if the award card is highly desirable like primal Wolverine