Basically, what I want to do is download one of the online textbooks I use for school (already dealt with) with each page as a .txt file so I can read my textbook on my e-reader instead of my computer. Anyway, so I couldn't find any good tutorials/I didn't know what to look for on how to make a basic ebook which consists of plain text and chapters so that's why I'm here!
TL;DR: I want to make a basic ebook with each page as simple text and with chapters.