The documentation is reasonably sparse, but there should be enough to get you started. We desperately need people to write documentation for XTRadius, if you are interested please email Jodie Dunlop who is currently co-ordinating the documentation.
userguide contains all the steps you need to get you up and running with XTRadius.
Frequently Asked Questions covering topics such as installation, configuration, and writing scripts.
Contributed by Frederick Faure, this documentation covers the setup and configuration of XTRadius using the available RPM's and the Radauth mysql plugin.
If you're new to radius, you might find all this jargon about attributes, RAS's and NAS's all a bit confusing. If so, check the vocabulary which covers some of the more commonly used terms throughout this site and the XTRadius documentation.
Here an example authentication script is shown and explained. It should help beginners understand how authentication works with XTRadius.