Latest Screencasts

PayPal Express Checkout is easy to add to an existing ordering system. See how in this episode. Watch this screencast

In this episode I show how to add Active Merchant's functionality to a Rails application to make a fully-functional checkout process. Watch this screencast

Active Merchant is a great library for handling credit card transactions. In this episode I will show you the basics of using it to communicate with PayPal's gateway. Watch this screencast

This episode shows how to encrypt the variables passed to PayPal and verify the authenticity of the payment notifications (IPN). Watch this screencast

PayPal's IPN (Instant Payment Notification) service allows your app to get confirmation when an order is processed. In this episode I use IPN to mark a cart as purchased. Watch this screencast

This episode is the first in a series on handling the checkout process for orders. Here we show how to complete purchases through PayPal's Website Payments Standard service. Watch this screencast