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.
First of all, big farm was my easiest game i did. It took me 2 days but you can easily do it 1 to 2 hours. 1) First of all don't be scared to use your gold coin thingies. 2) Stay updated on your farms and farm animals. 3) Use all your space you have. 4 keep your workers happy so you get some discount on the things you buy. 5) log in daily to get some free stuff and check your farm out. I hope this helped you a bit.