With these two book types, you get the chance to make more money from the same niche simply by adding content to your main book.
So, for every niche you write the 10 questions, you can create two other excellent books that make people crazy and are growing daily in sales.
You can write these books in English or any other language. They are super hot, and your sales will skyrocket once people start playing with them because they want more!
All you need to create a new book are 30 minutes for the first type and 20 minutes for the second.