Hi Andy, I'm so sorry to hear of your Dads diagnosis.  We too were hit with the news just before Christmas that mum has a brain  tumour after being investigated for memory loss ( and kinda expecting a dementia diagnosis!) at present it's believed to be benign, however until it's operated on we won't actually know. Scary times indeed.  I hope you have some support and are able to talk to someone close.  My dad in law had terminal lung cancer recently and it was very hard to know how to feel... angry, scared, sad and lost were the initial thoughts.. we did however have great support from a local cancer organisation and talking things through with people who really understood the situation and verbalised all we were feeling very bluntly was helpful and when the time came to say goodbye we were way better prepared for it.  If there is such a thing as being ready, we were.  Best advise we got was enjoy as much time as you can with him, most people look back and say ' I wish ...' so do it, eat cake, visit places you fancy, do daft things together as long as he is able, they make great memories to ease the pain just a teeny bit in the difficult days after.   I say days because we felt we had been able to do as much as was possible and had happy memories too, sounds strange I know.   Enjoy your Dad, stay safe, all the best to you x