Install IntelliJ, learn how to create a Kotlin project. The make a bunch of programs that read and write form the console.
A few ideas: Write out multiplication tables. Make a program that plays black jack. Make an interactive fiction game.
That is how most people start.










For a while 1 wasn’t considered to be a number either http://aleph0.clarku.edu/~djoyce/elements/bookVII/defVII1.html