The referral links for coinbase have probably been posted for ages now, but here is mine if you want to get started on coinbase.
My suggestion is to look up videos on youtube as to why, one would use coinbase.
If you formed your opinion and decide to sign up, you can use my referral code and help out a small time guy and your self instead of the guys with a big community
Here is the link https://www.coinbase.com/join/5a37777abbace70606ba96e1 the bonus will be added as bitcoins, and the referral will only work if you buy atleast $100,- or € 84,- of any of the crypto currencies.
DISCLAIMER:
I'm not a financial adviser, the crypto currency market is highly volatile and you could lose your investment.
cheers