Still Confused on how Steemit works

Hey Guys, so i joined this platform few ago
I was introduced by a friend of mine. And he said this platform pays when you upload a post, and to be very honest i'm still not sure of how this works
I'm writing this post because i know i'm not the only one who is this confused. I will really love it for someone to guide me on how it works
Please comment if you are familiar with how this works
I'd really love to be able to guide others who are as confused as i am
Feel free to comment,repost,like and give upvotes
Thank you!