Help please

Can anyone please explain how does steemit work ?? what SP are ?? how can I earn them ??
Steemit is a social media site but it can earn you cryoto , how can I get more likes ?? how can I earn more ??
I live in Tunisia , north afrika , no one up here use or even know about steemit , so how do I get more fans ?
and what about translation ?? I can read english written posts , french or arabic , that's it , coreen is something I can't read
I hope someone will give me some of his time and explain to me simply !!!!!!