The best example would be to ask yourself why you are here? Are you here to learn about bitcoin and other cryptocurriencies and other related stuff? What made you decide to sign up on this site and who told you about bitcointalk.
I just saw it in an article, and its because to earn of course. I have read about the campaign things so I sign up hehe.
If you are indeed here for the signature campaigns, you should make sure you read all the sticky threads in this forum.
Pay special attention to this one - Signature Campaign Guidelines
https://bitcointalk.org/index.php?topic=1684035.0