So what is the best thing to do as newbie, is it finding a campaign to join or learning first ?
The best thing to do as a newbie is:
(1) Stop trying to make money here,
(2) Stop trying to make money here,
(3) Stop trying to make money here, and most importantly
(4) Figure out how you can make a valuable contribution in this community - what do you have to add? what discussions can you create? what information can you share with us?
It is only after you earn a reputation contributing to this forum that you'll be offered the privilege to earn some bitcoin on the side.