on Just Publishing Advice:
Writing your book will be a long term project.
There are many facets involved in the writing process that you will need to bring together.
But before you start writing, make sure that you have the very best tools for the task ahead of you. You might have already started writing your book in Microsoft Word or Google Docs.
But word processors are designed for office projects and tasks. They are fine for online writing and blog posts, but they are not the best tools at all for writing a long manuscript.
The writing tools in most word processing software are very basic. If you want to improve your writing, you need much more than a simple grammar and spell checker.
There are many free and open-source options for book writing software. But if you are serious about writing your book, you really should consider using the very best tools available for the job.