Welcome to the community 
Feature idea: Jupyter Books as a landing page for hub log-ins - #16 by yuvipanda might be helpful! Particularly, check out Feature idea: Jupyter Books as a landing page for hub log-ins - #17 by fperez on how to do this on a JupyterHub?
For setting it up locally, Create your first book is the official starting point (I think?). Are you running into any specific issues while setting it up?