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 was thinking about making a budget loadout less than 50$ with a knife or buying prime and leaving skins for later I wanted people's opinion on this.