bitcoin is also money.
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.
Yup Signature campaign is very good for earning Bitcoin and This is will helpful to know about market demand of Bitcoin. But we can try trading also. In trading Very can earn good money But it is little risky.