what is a good starting point for a newbie account to participate bounty? I already have tweeter and facebook account, can i start it
To participate in bounty campaigning on facebook or twitter you do not need to worry about that having newbie account is the problem.
Then you can participate on any bounty campaigns in any numbers bro, no one will be stop you participating in that.
If you want to join in signature campaign means only you need to contribute for one campaigns only.