This assumes that the files are placed where your webserver can access them.
- Create mysql user and appropriate database.
- Create a config.local.php (cp config.local.php.sample config.local.php), and add the corresponding information.
- Install/update the database
cd migrations; php update_database.php [USERNAME] - Configure the web site, ((via config.local.php, see instructions in file)).
- Access the web site, and fix the last things that it complains about.
Make sure to visit "daemon status" for full diagnostics.