First of all, I am probably the last person who should be explaining or giving a “how to” anything. I am still figuring most things out myself. But, I can tell you how it is for me and a general idea of the process.
You don’t have to write a book or a story complete all at one sitting or over the course of a few months from start to finish. You don’t even have to have an outline for one. Though, there are many who do, and as many writers who just write as it comes and figure how where it goes as they write. There are as many ways to write a story as there are personalities.
Where to start? You start where you are. Start with the idea in your head. Write it down, whether it is a scene, some dialogue, a character, place. That is your start. As more comes write that too. Write questions and thoughts about that idea.
Don’t worry about spelling or grammar, just write it down. That is what a rough draft is. Some start with that idea making notes and outlining what they want to tell about. That is the start.
It doesn’t end there. Then you have to edit. Some edit during the writing,others edit after they think they are done. After the first edit, and for some many many more edits and rewrites from the initial effort to the finish.
Basically you just write. Part of writing is figuring out your process in the beginning. Here is where it gets sticky. If you research enough, you can find something that contradicts everything. I got caught up in that while I was searching for my temporarily lost writing voice.
So I went back to what I knew worked most all of the time. Ta-da! The writing block broke. I found my voice again. It isn’t what others do, it is what I do.
We know ourselves but sometimes we let others lead us astray of what works best for us because it doesn’t work for others. Find your way, and stick to it. I am.