There are so many freebies on the internet you can use for an e-learning project. There are tons of free images, fonts, templates, audio, video files, tutorials, blog posts. The only limitation can be found in Creative Common licence so double check whether you can use the asset for a commercial or private purpose. I've focused today on a totally free stuff and have built 8-slides demo in Storyline 2. Have a look below at what I found to start working on this freebie: - inspi