Resources for a non-medical person to learn about medicine?

Hi there! I am not a medical student, but I thought this might be a good place to ask my question. I am an engineering/arts student, but I have a bit of an interest in medicine. I don't intend to pursue a career in medicine, I am far too in love with engineering, but I would like to learn a bit about some of the rudiments of the field. I have had a read of First Aid, but it is all super high yield mnemonics, I am more interested in a bit more of a textbook. If it matters I am based in Australia, so would prefer to learn the Australian/English terms for things, but that is not a great concern.