To earn money with bitcoin you can do some works if a person needs help with something or just look for a job you might have luck finding one here in this forum.
Just buy Bitcoins at a low price and save them for a while. When the price goes up you can sell them at a profit. It can take a while before this happens but you just have to wait it out.
Trading is good way but you need initial capital and decent knowledge of the subject to earn money.,
Yeah trading is applicable only to experienced users and if others do they may lose. Join signature campaign and give constructive posts you can earn money and is applicable to all.