To use this setup you have to have the server installed by yourself.
There are two different versions of the full install available: 1) empty database (you can immediately start with you own data) and 2) a “dummy” version - this is the same version with all the data froim the demo page.
Unzip the files qb_htdocs_only.zip in the directory htdocs -> qb and import the files qb_structure_only.sql (to create an empty database) or qb_dummy_data.sql (to create a database with dummy data) via phpmyadmin (see documentation).