If you are looking for a documentation and you can't seem to find any, kindly add it to the list. And if you're looking through the list and find something that is already documented, kindly provide a link to the reference. And if you know about a topic and you have the time, kindly create a page about it. Even if just to start the topic.
1. Site Descriptor
2. XDoc (that supported by Doxia)
4. Dependency Mechanism
5. Plugin Registry
7. Running Macker with Maven 2
9. Maven Diagram Maker
10. Windows, Maven, Eclipse, Nexus, Perforce, Team City, Oh My!