It isn't that tough to earn Bitcoins online, if you like to work online or offline you could try to put a gig up on Fiverr.com, they accept Bitcoin payments and the also paypal as well.
You could also just invest in an Altcoin and get paid Bitcoins when the price goes up so you could earn more money after you've made a withdrawal from Bitcoin Exchanges.
Bitcoin isn't rocket science, after getting past the technical side of Bitcoin then it's really easy to make money with it.
Currently best option is investing in Altcoins because in last few weeks we have good turnover in few coins which are giving some good profit but better check all markets and done analysis then invest in because some time fake trading from fake devs can hurt you badly and you can lost your hard earned money
Investing in alternative coin is not always advantageous, depending on the individual in the form of strategy and investment plan of a person. But many people have already proven to get a lot of profit from trading alterntive coin