It's hard to find a good signature for a Newbie !
maybe someone will prompt me where to look a signature or a good bounty? sites, groups?
There is no signature campaign or bounty campaign for newbies at all. There are some bounties take the newbie participant to social media campaigns. That is only way to participate on the bounty campaign but still merit will not affect you to reach until the junior. I believe even member rank is easy to achieve. You need to gain the 10 merits with the quality posts you make on this forum.