My suggestions:
For the first time I suggest to join social media bounty.
Because that is easier than another kind campaign.
And if your social media have small friends/follower, increase it. If facebook is simple, just add friend who interested in cryptocurrency. If twitter, is hardly than facebook. Please make post using hastag with cryptocurrency related. And I think fill your Bio with hastag #followback and cryptocurrency related hastag. Follow account with interested in cryptocurrency.
After you increase your friends/followers. You can join social media campaign.
After social media campaign, I suggest to join signature bounty. In this forum you possible to increase rank easily. Increase your rank and you can join signature bounty.
After two kind campaign, you may also join another kind campaign such as article/content, video/youtube, translator, etc.
Keep spirit.