First gather your materials
Once you gathered your materials find your celebrity Ex: Justin Bieber
Next do some research on your celebrity. Try to include birthday, middle name, and home town.
After get some scissors and tape to start hanging posters.
Then online to a social networking site like Facebook, Twitter, or Tumblr. Search your celebrity and either follow or "like"
Next go on their site. Order some items such as t-shirts, hoodies, bracelets, etc.
Now talk to some friends or other people who share the same interest as you.
Later go shopping for CDs or movies starring your celebrity
Now go online and search for some tickets to concerts or meet n greet coming to a town near you.
Finally promise to love and support your celebrity no matter what they do. <3