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.
Basically the title is telling you a lot. The ads are multiplying very much on all social media. Plus it's becoming one of the most ads anyone has ever placed online like they spent a lot of money. But the ads are one of the finest ones I've seen they make you see people all around the world playing and it's pretty nice.