This might also help you to know what the requirements are in order to rank up: https://bitcointalk.org/index.php?topic=2818350.0. Since you wanted to join bounties, you will need to rank up to at least full member in order to earn a decent sum of btc, this thread will help you know more about merit system. Also, you are not to late in trying to earn Bitcoin and hold it as it still does not reach it's full potential.