How to handle large amount of list/data? Or insert data in list

[Lollipop (Rahul)]

I’m making an educational app. There will be 6 subjects and each subject will have 100+ topics in 2 language.
Each topic will have 5-6 slides (vertical arrangements) and 2-3 MCQ.
For slides, I need 2 list, one for title and other for main material.
For MCQ, I need 7 list.
What will be the easier and faster way to add content to app ? And I want my app to work offline also.

[Still-learning (1-2-3-4...)]

then you should get all the data from database into variable as json format. Then by using dictionary method take the list that you want