What is the best way to organize data storage for an e-book on ember.js?

Question

Ember.js

Hello. I have a task - to create electronic textbooks.
One of the requirements is cross-platform.
Therefore, I decided that the ember.js + cordova/phonegap bundle would do.
But since I have never done javascript programming, many difficulties arose.
One of these is how to store texts.
Now I have made my own template for each chapter, in which the texts laid out in html / handlebars are stored.
But since there are a lot of chapters and there are also sections with additional materials (for example, game tasks), this solution looks unsuccessful.
At the same time, I would not like to use databases because of the complexity of version control and the frequent need to correct texts.
Tell me, how best to organize data storage (json, as I understand it, disappears?), Can I pull data with ajax from html files?