Before you proceed further to earn money online, the first thing to do is to register email (gmail is the best) to be used in PTC sites. Usually after registration, an activation link will be sent to your email address. Log into your email and click on the link to activate, otherwise you cannot login to the website. It is not recommended that you use your personal/primary email because of spam.

Thereafter, you need to register with both PayPal and AlertPay. Why both? 

Because some of the sites will accept payment and / or payout through Paypal and / or AlertPay only. And some sites may have problem with either one payment processor during payout time. I did noticed that some sites have different withdrawal fees through PayPal and AlertPay. For example, the withdrawal fee charged by Moneybux is lower if you opt for payment through PayPal. For other sites, withdrawal fee through AlertPay is much lower than PayPal. 

Sign up for PayPal and start accepting credit card payments instantly.