lastly you can always earn Bitcoins once you have a solid knowledge of it .you can even earn Bitcoins indirectly by teaching others or even running a local exchange and lots more. so newbies out there do not rush into buying Bitcoin without first understanding Bitcoin which can even be done by engaging in important discussions on the forum expecially those of experts and experienced investors. remember knowledge is power.
How could we earn bitcoin by teaching others? Whether that will be without investment? Bitcoin is not knowledge itself. Bitcoin is a coin just like other coins, the more its hype is due to the way it is behaving. If we don't know about bitcoin, we can't trade in the manner that should be needed for it, also we have to know about more traders' experience. Trader's experience comes from other top traders, we should know about them in different discussions, and engage in those.