Ok well. There are exactly 43858 ways to earn BTC.....
Here is the honest answer. Noone is going to tell you. If someone is making money they not going to share that. Only a scammer does things like share a so called business idea. Anyway it's up to you. You need to look around the forum and not be told what to do but ask yourself. Offer to help someone with something and maybe you will be rewarded. Then you find some more people and do the same. You can make as much as you want it is up to you. Signature campaign is only a small gift do not focus on it. Use your own initiative. Don't wait to be told what to do just do it.
Some ideas
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Keep up to date with your chosen coin you supporting. Talk to the Dev. Offer to help. Do not help only to profit though. Also the more you help your coin the more valuable it will become.
Blogs, posting, advertising. Create a blog and talk about anything you know about and like. Posting to advertise your ideas. Make quality posts about your ideas or business or whatever it is. Add some links and use a nice signature you make yourself. People like that. Believe in yourself ! You not gonna make much to begin but don't stop. Even the richest man began with nothing.
You can ad advertising to your blog and make quite a lot if you have good articles and quality appearance. Out the effort in people notice and it goes a long way.
You can even add refferal links on your blog on top of that. Multi stream income !! Passive if maintained.
Ok now my fingers are sore from typing good luck to you and don't give up ok !
I think the same, cause all this similar topics have pretty much the same answers and comments. People keep good ways for them selves and they don`t share it with all the people around. Main thing is not giving up, like you said in the end, and that is most important thing. All ways can work fine and bring some monthly income, just they doesn`t come easy as we speak here, learning investing in different things, trying, and trying, and not giving up and maybe he will succeed one day.
In my case everything was slow and low in beginning, that road most of us who didin`t invest money in bitcoin and bought a lot need to pass. Good luck to everyone, I hope you will find your way.