In researching Run I came across a ton of useful online resources. Here’s a few of them:
(Not seeing your country here? Parkulture has the most comprehensive listing I’ve found)
The best thing about these organisations is that they all run classes, from absolute beginner to seasoned traceur, so you can stop reading and start jumping! (I took classes for a little while at Parkour NSW, who are a fine bunch of people).
If it’s stunning parkour photography you want, you can’t possibly go past Andy Day’s website. He’s been associated with the scene since 2003, and it shows.
You should probably watch this.