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 like how i can spend up to around 1 & 1/2 hours making an article about Flood Escape 2 and how to beat a certain map, but people dont care because they dont have time to quickly skim over a few lines have to actaully give it a good review because they would rather just get points (and just to note, it WAS NOT plagerism or spam!)