What do you mean that I have to invest my time, and how do I join one?
you need about 3 hours a day for posting, maybe more if you are still not confident with this place and you don't know much, you can't simply post garbage, you need first to have a basic+ knowledge about bitcoin in general
then you need to join a campign that pay well, like bit-x for example, but you need to wait a bit, because i think they do not accept new members for now