I will leave in description some ways and sites to win free coins.
https://www.coinbase.com/join/56c0fe2bbd417c5b00000048 (Best crypto exchange in general, invite a friend with the Coinbase referral link and receive $ 10 per entry)
https://www.genesis-mining.com
(best cloudminning site, use reference code - G3V0iz - in your mining purchases and receive a 3% discount on your purchase)
https://freebitco.in/?r=2168120
(oldest and more reliable faucet site ever, you can claim bitcoins every hour, getting 4% interest per yerar, great way to get into crypto without investment)
https://www.eobot.com/user/360247
(Oldest "free" cloudmining site, it has an excellent daily faucet reward system in various currencies or you can buy minning power)
https://www.binance.com/?ref=17858092
(receive 20% of the value generated from referenced in the best exchange of altcoins in the market)
If you register on any of these links leave a comment that makes a return of 33% per annum of the profit generated!