Ask HN: Interactive Online Book Publishing?

What would I use to publish a simple book? I have text files that I could use Markdown for formatting. Static generators are nice and I have used several. I want some of the text hidden normally and if the reader wants more info to click an icon to view the info below the section, also would like a search icon that would produce links to the sections where the word is found, like a grep almost. Very new to web dev and willingly to learn. I want to keep it simple and accessible to any browser, even lynx. Thank you!