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"
“ My friends, I created this page to have a vision on what it remains to modify. The purpose is to...
DASHBOARD FOR UPDATE
“ First of all, thanks for your help, you are putting a lot of efforts in this community, and...
New contributors please read this