Support inquiries

support
RRDtool Support page

The following resources helped me to understand RRDtool better

rrdtutorial
Alex van den Bogaerdt's RRDtool tutorial
rrd-beginners
RRDtool Beginners' Guide
The man pages of rrdtool
man rrdtool, man rrdcreate, man rrdinfo, man rrdgraph, man rrdgraph_data, man rrdgraph_rpn, man rrdgraph_graph, man rrdgraph_examples
The online man pages can be found here.

This project is open-source

repository
You can contribute at GitHub