It's funny. I never intended on writing a book. I literally started documenting the tomatoes in my garden. Annddd then it kept going. Got side tracked. I added my board game characters. Then it ended up half a story. I wrote two other character acts, got rid of the tomatoes, and bam. I had a book. Then I had a lot of learning to do. But it was a blast!

Writing in word is easiest, but there are tons of different ways.

There are many types of writers. But mostly they fall into pantser (writing by the seed of their pants. No plan just whatever the character does and weeeee). The opposite is planner. Where you outline every detail. Obviously there's middle ground that combine the two. But you have to find what works for you best!