Offcourse, there are number of ways and sites are available for earning Bitcoins. When i am 16 yr old, by normally searching in google... i knew about Bitcoin ( 1 Bitcoins is equals to $320, now $416.53) i wondered and searched some sites for earning bitcoin and i earned some coins, but i faced number of fake sites that offers us bitcoin for doing some works........
So friends, first analyze particular site and use it for earning......
This Article may help beginners who wants to earn bitcoin..............
https://earningmoney2016.wordpress.com/2016/01/16/top-7-websites-for-earning-bitcoins/You can lend btc to people if you have some money its a pretty good way to earn (beware of scammers!)
faucets sites or faucet at primedice (200 satoshi haha

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signature campaining,trading etc. just be creative and you will find more