Hello guys, how are you?
I have reached Jr. Member rank and I've no idea how to start signature campaign. Is anyone can explain to me how to begin?
Thank you for your attention. Cheers

You can try to join this campaign
https://bitcointalk.org/index.php?topic=3055616.0 instruction how to join is posted on that thread. you can not ern to much on this campaign but I like the slogan of thin campaing "This challenge was designed to help eliminate spam and shitposts from the forums.
In return, you could be rewarded for posting quality content and contributing to BitcoinTalk" From this slogan I think us a new member of this forum will create a meaningful and fruitful Post.