This document describes the features of the Commons Configuration component starting with the very basics and up to the more advanced topics. If you read it in a linear way, you should get a sound understanding of the provided classes and the possibilities they offer. But you can also skip sections and jump directly to the topics you are most interested in.
Note that many features described in this guide are only available since the 1.3 release of Commons Configuration. If you are using a 1.2 version, have a look at the older Howtos documents, which specifically deal with this version.