This is the universal category which expands to cover all standard articles. The following four subcategories comprise them by relevant type.
The "Battle Bears" category is intended for all standard informative articles relevant to the wiki's subject.
The "Guides" category is intended for articles created for educational purposes in regards to editing or other wiki-related activities.
The "News" category is intended for miscellaneous announcements and other informative pages posted by administrators.
The "Organisation" category contains various other categories that have been automatically applied to default Wikia pages, many of which are not typically used.
A full list of existing categories can be found at Special:Categories.
To add a new category to a page, just add
[[Category:Categoryname]] to the end of the article or existing category page.