As mentioned in the core concepts introduction, JoomProject consists of multiple extensions. Fortunately there is no need to install each extension separately, as we distribute JoomProject in a single package. To install it, use the standard Joomla extension installer located at:
Joomla Backend -> Extensions -> Extension Manager
The installer also creates a new "JoomProject" menu including the menu items to the different JoomProject components. Additionally, a menu navigation module is created which is needed to show the menu on your website frontend.
The modules are not published and not assigned to any page when created, so you'll have to do this manually by going to:
Joomla Backend -> Extensions -> Modules Manager