For templates, there are quite a few example comps in the Bins system. Shaders, particles, motion graphics elements, lens flares, etc.
Video tutorials will come as the user base grows, which is certainly will at the new price point. Almost none of the good AE stuff comes from Adobe—it's all user-generated content. Here's the Youtube channel of my new friend Tony Gallardo, who does some Fusion-for-AE-users kind of stuff:
https://www.youtube.com/channel/UCipLMP ... S6L9oPwTOgI don't personally do videos because I can't stand to learn in that format, myself, so I do text-based tutorials on my blog, including an in-progress complete compositing course that takes the reader from "What's composting?" all the way through to the skills they'd need to start as a junior compositor. I also sprinkle in some more advanced techniques and case studies.
www.bryanray.name