yes you can join a bounty campaign even if your a newbie. you can get an altcoin or a bitcoin depending on the campaign that you've join but  dont expect too much because as a newbie you can only get a less to little payout when compared to other higher ranks. just be cautios because most of these ico bounties are known to be scam and wont assure that they would pay you upfront after you completed the task. you might also want to try joining an airdrop as aside to your bounty campaign for an extra tokens.