Mental Health First Aid Australia is a fabulous organisation with a mission to provide high quality, evidence-based mental health first aid education to everyone.
Having completed the certification, one of the key learnings was to recognise and not diagnose a mental health problem. Mental health is complex, so the training helps recognise the cluster of symptoms of different illnesses, how to offer and provide initial help, and guide a person towards appropriate treatments.
I would highly recommend everyone complete Mental Health First Aid. The courses are widely available and accessible across Australia. https://mhfa.com.au/courses