Fiction kindle children book

Hello, I'm considering getting a children's Kindle eBook writing.. The description would be based on teaching kids how to learn about money but in a very fun way and by using animal characters and an island scenery... I just need you to include placeholders in the book for them. I plan to publish on Amazon KDP so I'm assuming the formatting has to be near perfect

The Title is

*The Amazing Journey to Crypto Island!*

"The Journey Begins!"
This will be the first series/subheadings, The first series will be about the beginning of money and this can be based on barter system where one item is exchanged for another item of value,You can be as creative as you want, The final series in the book will be when the children finally make it to crypto island where they can do and be anything they want to be,All the prior book will need to end up to this ending


while the outline is
In the beginning
The following month
3 months later
6 months later
The end of the year