Hello, I'm a new member of this forum. I'm new to bitcoin too and just start to earn it through foucet. I heard that there is a signature contest in which member can earn bitcoin via posting and i want to know how to participate. Basically you advertise their site through your signature, right?
As "Newbie" user you will earn only dust from signature campaigns. To earn any decent amount of Bitcoin you have to jump to higher rank. When you reach Full Member rank, or at least Member you can look for signature campaign opened for new participants in this thread:
https://bitcointalk.org/index.php?topic=615953.0