The Australian eSafety Commissioner has provided a great set of resources. It really is worth your time looking it over.
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You can find it here -> https://beconnected.esafety.gov.au/
Be Connected is an Australian government initiative committed to building the confidence, digital skills and online safety of older Australians. Whether you want to pick up new skills or dive into a new topic, you can access our free learning resources online or join one of the thousands of community organisations running free computer classes across Australia.