Developers often learn a new language by getting the system to say "Hello World!". Displaying text output is one of the most basic things you would do in a program, so this will give you an idea of the most basic setup and code to make the system do something.
From there, you need to learn all the bits and pieces it takes to write a complete program.
In order to get a job, you will need to reach a level of proficiency with building and modifying systems to suit people's needs. There are many different kinds of developers, so the more you learn about the types of jobs and the work to be done, the more you will be able to choose what you like.
As someone who wants to become a developer, you should take the shortest path to learning the necessary skills and finding your first gig. From there, you can reevaluate what you've experienced, where you want to go, and how you can get there. Having a paid project under your belt will allow you to tell a story of yourself as a developer that you can use to find more opportunities.