Documentation explicitly for Backlight 2, as differs from the previous version, is here. Much of the version 1 documentation still applies in Backlight 2, and you may find it below.
The Designer is where much of Backlight's magic happens. It allows you to customize the appearance and features of your website's galleries and pages. The items below cover the main concepts one should understand to make effective use of Backlight's designer.
Backlight includes several standard modules used to create Page Templates, Album Set Templates, and Album Templates. These modules form the backbone of Backlight's Designer.
We name our design modules after animals. Backlight 2 uses the “Pangolin” modules.
Add-on modules extend Backlight 2 with additional features and functionality.
The Client Response Add-on allows Backlight's galleries to accept image selects and feedback from a visiting client. Its intended use is to help facilitate interaction between the photographer and client(s) following a photo shoot.
The Publisher is a publish services plugin for Lightroom, and allows you to create and manage albums and albums sets, and to send images from Lightroom to Backlight.