I'm newbie in crypto, and these days I'm reading about people earning coins with "Signature Campaings"
It's the most popular way of earning here in forum, advertising.
Are they interesting?
Yes
What exactly are those campaigns?
Companies that will pay for your post in return of wearing their logo(avatar) and signature.
How can I join them?
Apply in the services section
Where can I get further information?
Read in that section.