With the world struggling to cope with Covid, much of our normal work has come to a halt. Instead of meeting, we are talking. Instead of doing, we are thinking. So I've used much of the time that I'd usually be looking after my patients thinking how I can help them in other ways. So this is it, my attempt to help people looking for help and advice, as straightforward, interesting and informative as possible, researched from sources around the world and my own 25 years of medical experience. I hope many will find this useful, and look forward to someone telling me they've read it...hopefully face to face.