$ 10 is offered with the purchase of $ 100 in cryptocurrency you will then earn $ 32 easily by watching the videos. you can very well put the wrong answer, it does not influence your earnings.
Click on the Coinbase referral link then create your account and you can start using coinbase and buying bitcoin, ethereum and litecoin. The 10$ coupon code will be automatically added to your wallet once you have trade more than 100$. You can share you coinbase coupon link & coinbase voucher to invite your friends and get 10$ of free bitcoin when they activate their account.