I intend to build my functional prototype in Axure, which will hopefully give me some room to add specific features to my design. This link takes you to my first MVP using that software. I'm pretty happy how it turned out, in its own low-key way. If you want to click through it, you can have some interaction in the "My Books" section. I will be making a short MVP video using that prototype in a couple of days, which will hopefully explain things better.