I came back here on Bitcointalk from a very long hiatus due to personal reasons. I wanted to start offering again my services such as participating in signature campaigns but I don't know where to start. Can some tell me what are the current qualifications to join some campaign and how/where to get them? Any help will be appreciated. Thank you in advance!
Well for starters, visit the service board and check if there is an ongoing signature campaign that has open slots designated to your rank.
As far as I know, majority of the campaign signatures require that you must have at least ten (10) earned merits in the last 120 days. In addition, your account must also have some active posts and comments given the competitiveness of earning that rightful spot in that signature campaign.
For the better understanding, put yourself in the shoes of the campaign manager. What would you require your participants before you accept them into the campaign? After answering that question, apply it to your situation and reflect.