Paypal is a global payment platform which is known for providing accessible secure web-based payments. More information about this payment gateway may be found at https://paypal.com/
For Paypal, several bits of information are required. These are:
- API username - API signature - API password - Paypal E-mail
The information for setting up and creating these details may be found at https://developer.paypal.com/docs/classic/api/apiCredentials/
After that, simply fill in the generated information to set up your payment gateway with Paypal.