I tested out Stripe last weekend. It's really, really simple. You can be up and running and billing shit inside of an hour, HTML and all, depending on how quick you are. The tutorial is dead simple and so are the docs.

You should go check it out, if you're interested. You'll see that there's really no need to wait for a video.

(I set stripe up in both PHP and Python, did the HTML and CSS and everything in a couple of hours. Was easy. I like things to be easy. -- Now I just need something to charge for... :P)

Implemented it over the weekend for http://stiffs.com - easy, solid, and way, WAY better than authorize.net or the like.

Stripe has an API for PHP and Python.

https://stripe.com/api