I’m about to write a book on web design and development using Bootstrap and want to use Adobe InDesign. I’ve actually already written most of it; I just need to insert graphics and polish it up a lot. I’ve tinkered around with Adobe InDesign a little, since it’s included with the Creative suite. It has a lot of controls and commands that are familiar to Adobe users, and is pretty easy from what I remember. I also would rather format my book myself, instead of writing it up in MS Word and THEN moving it into a preferred format. I’m a masochist that way, because I know MS Office in my sleep from grad school and editing countless works for people. One of a few curses of the English major. I’m giving the book away as a download here.
So I set out to see if I could find some free InDesign book templates to start me off. That wasn’t such an easy feat. (And, for the record, I detest websites that offer things for free, but then make you sign up and then, after jumping through several other hoops, spring on you that you have to actually pay. I don’t mind paying, but be up-front about it. Otherwise I’m bailing out of protest to your method.) The Adobe Exchange is hit or miss and, for me at least, is usually miss. I end up looking at plugins that haven’t been updated in forever, shoddy coding, or extensions that are for CS2, when I’m using CS6 (extended).
I found a pile of free Indesign book templates here for you to use. There are a few other sites, but InDesign doesn’t have the star-power that Photoshop or Illustrator does, so the resources are scarce. But hopefully this will get you (and me) in good shape to write our masterpieces.