How it works? which is the general way of earning nem?

I just created a NCC/NIS wallet. But don’t know how I earn nem/xem. there is a faucet system. is there any other option to earn xem with buy? harvesting need a lots of xem.
Then how I will earn xem without faucet?
Thanks in advanced.

https://www.google.hr/search?q=google&oq=gppg&aqs=chrome.1.69i57j0l5.2834j0j7&sourceid=chrome&ie=UTF-8#q=nem+faucet

You can do buisness for nem also ,)