Yes you can join in bounty but not any bounty because there are rules applied. In other bounty campaigns they are requiring atleast jr. member to be able to join their campaign. But there are also bounties that are accepting newbies. Try to find it in bounties(altcoins) , do not attempt to join in the bounty that doesnt accept newbie you will just waste your time. You know when I was a newbie , I already joined in campaign and now that im a member I have made some progress in my rank and also i will received rewards . Two birds in one stone. That's why i suggest that you join in a bounty campaign as soon as possible , you just have to be patient on finding bounty that are accepting newbie.