I see that most users suggest to get enrolled in a sig campaign and earn with it, as it gives a reliable earning. But with signature campaign earning will be limited. For this reason I prefer newbies to learn other earning possibilities, to combine both things.
Really limited and it is not a good way to make money if you have no job at all in physical world. This is just to be considered as your side job while you are getting relevant information online that can be useful for the investment you want to make.