There's quite a few resources. Liz and I did a video series https://www.youtube.com/watch?v=uTEL8Ff1Zvk and blog series: https://cloud.google.com/blog/products/gcp/sre-vs-devops-com.... It's about 50min of content, but it's framed through a slightly different lens. There's also a coursera course: https://www.coursera.org/lecture/site-reliability-engineerin...

Disclaimer: I work for Google