Looking to create a combination blog and paid online course site, like http://chrisoatley.com

I've used Wordpress a long time, and I'm fairly intermediate in knowledge/experience...

This site, www.chrisoatley.com provides a pretty good example of what I'm looking for. Once a user logs in to the paid portion of the site, there's a list of courses. As payments are recurring, the next set of videos unlocks automatically each month.

Does anyone have a rough idea of how this site is built, and how to setup automatically unlocked pages each time a member pays? Also looking to have this sort of module seperate/behind a paywall form the main site, which will have free content, blog posts and sales pages for the course.

Really appreciate the assistance!