To add a new category to a page you can click the Category button at the bottom of the page and type in the name you'd like your category to be called.
A full list of existing categories can be found at Special:Categories.
Pages in category "Browse"
“ This page is used to tell visitors all about Eldarya Wiki. Click the "edit this page" link...
“ Hi guys, it's AniBon and since the future new admin FernFTW appointed me as the official...
“ For a full list of help pages, see Help:Contents, which includes help pages shared across Wikia.
“ This category contains hidden categories. Unlike normal categories, these are not displayed at...