The state library has access to LinkedIn Learning. There should be some courses in the catalogue. Sorry, I can't find the new link.
https://www.slq.qld.gov.au/research-collections/information-collections/eresources/lyndacom/what-you-need-know-about-lyndacom
You also might find something on edx and coursera. They both have options to audit the course content for free.
https://www.coursera.org/learn/introduction-to-computers-and-office-productivity-software