Good news, just as the previous earning event finished, the new Earning event is underway, making it an ideal starting point for everyone who wishes to gain some miners and assets completely F2P, just by playing the minigames. The current theme is "a Galaxy Far Far Away" so expect lots of planets and physics and potentially Star Wars references there!
These events are tailormade for enthusiastic new F2P people or for people who want to boost their accounts without necessarily spending tons of money. Of course spending will have an impact on that, but judging from the previous events you can get quite a decent amount of Hashing power just by playing the games (alongside with all the other bonuses that you normally would get like the daily and weekly missions). So to sum it up it is an ideal time to start playing, and if you use this link you can also get 1000 Satoshi for free to boost your account even further!