Hi everyone
Although i am new here but i am not new in cryptocurrency market.
Welcome though.
Is there any Restrictions to join bounty if i am Newbie?
Depends as per rules of that bounty you have seen. Obviously, signature campaign bounty won't accept newbie unless you purchase copper membership.
Is the bounty program for only bitcointalk users, i see i should add and use my user name of bitcointalk.
There are bounty portals that's open for everyone but most of the bounties are found here.