Go to PayPal.com website and click the Sign Up Button.
Step 2:
Select the Country or Region where you live and Choose you prefered language. Create a Premier account (Premier account is free of charge).
Step 3:
Fill up the form with your personal information and input your email address (this email address will be your paypal account address).
Step 4:
When asked for a Credit Card Details, Skip it by pressing cancel. (or if you have one then it's ok).
Step 5:
Account validation and then your DONE! You can now use your PayPal account to receive payments from those PTC sites and other payments that you want to receive.