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.
IF you have enough money to buy full buy, what grenades/utility do you purchase. What do you do when half buying or playing eco rounds?