As this thread was created a long time ago but i think it's worth to be replied. Now about the question. Yes there are some bounties that accept a newbies, but if i were you i would rather to ranked up before joining any bounties. Because in bounty campaign the low rank have the same task with the high rank.members yet the stakes they received have a very big difference. And i think sir you can join any bounties as of this day because you're already have a member position.