Nic is right. In addition to his answer, you may find the documentation useful.
This page tells you how to use labels to categorise spaces: https://confluence.atlassian.com/display/DOC/Using+Labels+to+Categorise+Spaces
And this page, and its children, tell you all about labels and what you can do with pages once you have labelled them: https://confluence.atlassian.com/display/DOC/Working+with+Confluence+Labels
I hope this answers your question! And a very happy holiday season to you. :)
Labels are there for putting arbitrary tags on pages, so that you can logically group them together, and search for them together. For example, in a confluence system dedicated to a zoo, you might label all the pages that refer to penguins indirectly with "penguin" (e.g. the pages that say "this animal is scared of penguins" or "penguins love to eat this")
Do you use templates with Confluence? Take part in a remote 1-hr workshop. You'll receive USD $100 for your time! We're looking for people to participate in a remote 1-hr workshop...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs