I want to create e-book for kids(need advice)

ebooks, epub, IFTTT, pdf, reddit,

Hello, is there any software that I create easy illustrations and make a book. I just loved the idea that I can spend 3-4 days and create a science e-book for kids 6-12 years, but I have no idea how to do it. via /r/ebooks https://ift.tt/HRiI2vs