Below are links for my presentation on Resource Hints for the SA WebDev meetup in February 2017.
Presentation:
https://www.meetup.com/sawebdev/events/237376447/
https://docs.google.com/presentation/d/1itdQmvgyd2p4Iudh_rHGqiPxX2JvYjkq6uu1hGz2hUI/edit?usp=sharing
Resource Hints Info:
https://w3c.github.io/resource-hints/