Installation of Productbook is standard of Joomla and Mambo.

Just login to your administrator section and choose "installers" in the top menu.
Select "component" en point to the dowloadad productbook.zip file you downloaded first.

Then hit "upload and install" and your ready.

Do'nt forget to configure the component to fit your needs.

You can Find more information in the Main menu under Joomla Productbook
Demo is under The Cars menu.