if you want earn money from bitcoin,just search some way to get bitcoin and then trade it to your local currency,its easy way to get money from bitcoin.
and way to get bitcoin is so many,one of it is join a good signature campaign.
It is not that easy too, if you say you are just getting more from signature campaign how long will you achieve a big amount of money? May be you have to get more account but only if you can manage it. And that is not a good choice. For what I can say you need some other income too like for instance , you can do some trading or gambling for a little bit but not addicted to it if you want to keep more of your money there. Or make some services to earn some coin