You can participate in bounty campaign if you are already jr. member and up. So make quality post first and wait until you reach a certain level where campaigns accept the level they required. But there are campaigns which you dont need to level up like blog, media, youtube, and translations campaigns. If you have the skills to do multiple bounty campaigns much better, you can apply on campaigns on the threads related to bounties. Altcoins are the most hot in terms of bounties, but first you have to study how to make quality and contructive posts and contribute to the community.