Thank you putting your question in the forum, First you need to find a title of your book and cover page. Share this in the Social media FB, Twitter etc., Before start writing the book you can make a good video and publish in your own youtube channel, create the curiosity with people so that they should buy the book on first release.
You can put your book in Amazon as upcoming release and this also need to share in the social media platform, ask the people place the order in Amozon and any other e-commerce website.
Release e-book of 10 to 15 pages by providing the 5% of the content and when people download the e-book required to ask their email ID and Contact numbers, this help you to send the weekly updates and release dates, where they can find the store online and offline.
You need to find a person who can help you to monitor your social media accounts, you need to ask the people to signup or show their interest on your upcoming book by asking them to provide their email ID and contact number.
I have gave about 60% of information to you, if you need further details please revert back on this answer.
Publié le 06/06/19