I bought the Fusion training tutorials created by Nathaniel Westveer, a seasoned VFX artist and Compositor. I went through each tutorial several times as there were many nuggets of information to take in. He delivers the knowledge in a casual laid back style and on a few occasions I burst out laughing at his humorous remarks.
So far I have learnt about aspect ratios, Keying, 3D and setting up materials, Tracking and animation.
Other videos yet to delve into deal with Time and Time Remapping, Titling, Illustrator Files in Fusion and full compositing.
I would recommend this training to anyone who wants to get up-to speed with Fusion. My knowledge of Fusion accelerated due to these videos. There are project files you can download to follow along.
https://vimeo.com/ondemand/110871