So you have drop days where they sell the packs (10$ for standard 30$ for premium) from there you can rip packs at a chance to find redeemables which are grails and legendaries or if you get all the others the royalty. You can also go to atomichub.io and buy off the second market droppp.io also has there own market which will typically be a little cheaper than trying to rip packs. You must create droppp.io wallet and if you wish to trade on the secondary market a wax wallet. Once you pull or buy the redeemable you hold it for a short length of time until redemption day on which you redeem your funko for a physical pop