User blog:FourSevensRueful/I Still Have So Many Questions About Categories

I have a couple questions about categories that I really want to ask! If anyone knows the answer to the questions, please post a comment! I might even have to ask the...HELP DESK OF UNANSWERING!
 * Can you delete a Category from an article? I've been wanting to ask because I'm finished editing some Article Stubs, yet I cannot delete that from the article!
 * Can you create your own Categories? I mean, I've tried, yet found nothing that could do it. I figured only Content Mods and Admins could.
 * I know this isn't really about Categories, but can only Content Mods and Admins delete articles/pages?

Anyway, if you commented, thanks for the help!

                                                                                                                                              Sincerely,

FourSevensRiolu