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.
I've tried other sites, (some) are legit. But some just made me do surveys and didn't give me any rewards which is stupid. I'm trying to find other sites that has tasks