For reference to those interested in H5P, several other OEGlobal 2021 presentations include items of interest.
Brenna’s presentation and resource at https://oeglobal21.trubox.ca/ includes insight into using among other content types, the Documentation tool as well as addressing accessibility issues
Kim Ernstmeyer shares resources from the OpenRN project including a large suite of H5P Branching Scenarios, available as a collection in LibreStudio https://studio.libretexts.org/collection/5224
I’d like also to recommend for anyone interested in getting practice creating H5P content who does not have access to a self hosted version of WordPress, or a Pressbooks account, or an LMS that has H5Psupport enabled, to look at the Lumi app- a downloadable H5P editor that can be used on Windows, OSX, and Linux platforms. It can create .h5p content that can be imported elsewhere.
And lastly I was involved in an H5P development project for BCcampus and all of the resources, examples, and webinars we hosted are openly available from the H5P Kitchen