For who don't know bitcoin, it's a digital currency created in 2009 and offers the promise of lower transaction fees than traditional online payment mechanisms and is operated by a decentralized authority, unlike government issued currencies.
To start earning free bitcoins, you need patience.
The first step: you should create a bitcoin wallet here https://blockchain.info/fr/wallet/#/signup where you will gather bitcoins that you're going to earn.
you will then have an adress of you wallet where you're going to receive bitcoins.
Second step: you should go to this website https://www.swissadspaysfaucet.com/faucet/?ref=hishem where you can earn free bitcoin up to 0.05592 mBTC per day, which is amazing because it's better than other websites, and you can also win lottery or other stuff there.
you will need to put your blockchain wallet adress in that website in order to withdraw the bitcoins you'll earn.
Also you can refer to your friends in order to win 20% of their winnings,
I hope this was helpful, don't hesitate to ask me more question and thank you

other fee bitcoin websites :
http://btcclicks.com/?r=7e1d7842
http://bonusbitcoin.co/?ref=AD417BBC310F
http://coinbulb.com/?r=hishem