Authoring metadata of Meta Facility is easy to start, the must-have basic skill is just XML editing. If you havn't got familar with XML, try the W3 Schools XML Tutorial or many others on the web. Once you are ready, continue to the rest of this chapter.
Any way of learning can be better than playing? The Brief Demo is your first toy then, play to learn!
Metadata structure is part of the design for real world applications.
In cases you need to generate XML files containing metadata.