you can earn $100 only 1 month just join signature campaign or try to find some mini jobs in service section like solving captchas if you have a skill like web designing or programming possible you can earn 1 btc in 2-3 months.
With certain knowledge in the network it will be possible to earn money in many large volumes. And you can earn $ 100 for these months and earn money on signatures.
There is still a lot of work we can do. Signature campaign is a capital to collect bitcoin for free.
After that we look for more profitable types of work. Trading is one option that we can choose.
Using Signature campaign money as an investment for trading would be a good idea if you cant invest. You can also try bounty's in new altcoins and hope to increase in the price of them.