Before curiousity kills me, how do authors get their books published? I mean.. do they like send it to whereverrr.. or do they get recommended.. yaknow.
What do they do ?

There are multiple ways. But if you're not already an established author, you can look up the mailing addresses, phone numbers, etc. of publishing companies and send in your work. For a predetermined cost, they will edit it and publish it for you.

However, if you're already a well-known author, you just give it to your editor, have it edited, and it's off to the printers.

Oh. Do they publish any books or are they reviewed first? ahaha so many questions.