A lot of help is available in the Aristotle metadata registry. The help in the registry assists registry users and public users to easily search and find any workflow or process they need to do in the Aristotle registry.
To see help in the Aristotle registry, click on 'Help' button, from either the header or the footer of the registry.
You will see some generic help documentation here on this page, with a few additional links.
If you will click on the above-highlighted 'Metadata help pages' link, you will see a lot of help documentations about the different types of metadata.