Any recommendations for XP (extreme programming) courses/certs?

The certification aspect is not the important here, I lead a team and would like to learn proper XP to then bring that knowledge back to the team and help collaboration and coach on how to make pair programming sessions more productive within the team.

And I'm convinced there's a lot of good stuff we can take away from XP, I believe it could be an eye opener.

Any recommendations for courses?

Thank you!