Play games
Choose the game that interests you and play itfor free.
Complete the quests
Every game has some quests for which you will receive Soul Gems.
Receive rewards
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
So, i just observed this, if you buy a skin that is on sale, it'll probably give you a well-worn to battle scarred quality But if you buy a skin that is not on sale but with a high price. It'll be within the quality minimal wear to field-tested. Don't bother buying skins on sale. FYI And if you receive a bad quality(battle-scarred) try contacting support but.. as for me, i contacted them buy never replied soooo welpss