Well first of all welcome to crypto world...  You are not too late in working here...  First thing you need to do is to know whether the bounty project you will participate is legit...  Ther are a lots of techniques that you need to know....  And if you choose the bounty you wantto participate just fill up their form but before that read also their whitepapers because sometimes it is one of a technique to know whether the project you are participating is legit... REad also their rules and after you've answered the form then try posting constructive post... Just continue posting until the endof their campaign... This is only applicable if you participate on signature campaign... Remember do not forget to wear the bounty signature...