The documentation includes the following:

Quick Start Guide - For new users with a few CDI meters - the shortest route to start logging

System Overview - This video builds the picture. Includes links to descriptions of the processes

Using MeterGrapher - Step through to see all the MeterGrapher functionality

Additional Information - Adapters, Location of Files, Log File Naming, AnswerGrapher, MGUsageCalcs, Diagnostic Files.

Demo Videos - These give a good insight into the way MeterGrapher works.