Chapters 1-11 is in book 1, and chapters 12-14 is in book 2. I don't know what device you use, so refer to the installation instructions.
I'm using Android
but why we have to install first book 1? Can't we just skip and play from book 2? I mean there isn't any important choice we need to import from book 1 or something,it's just use of space for nothing