So sorry to hear of your loss. At such a poignant time of year too. So sorry.
I know all about the crying and the trying to deal with things. I lost my mum in October 2017 and am still trying to sort everything out now. I must have spent the fist six months mostly crying and still do it now from time to time, mostly when I'm least expecting it to happen. At first I think it's just sheer shock and misery, loneliness and loss that you are crying about, but later I think pressure just builds up and you have to cry to help release it.
Don't worry too much about sorting anything out at this stage. You are going through enough with your loss. After a bit, just concentrate on ensuring financial problems are sorted out, so that your daily life doesn't complicate things for you. Anything else can wait.
I'm afraid this is a long and painful process without any time limit on when you might feel better, and it is a change of life that you will slowly have to rebuild around this terrible event, but it can be done in time. Just take it a day at a time at the moment. Lean on friends and relations if you can. If not, lean on us here. We do understand what you are going through. It's the most awful thing you may ever have to endure, but it is still early days for you, so just cry if that's what you need to do. Do try and remember to eat and drink. It's easy to forget when you are so overcome, but just look after the basics for now and give yourself time to recover from the shock and slowly, you will find a way forward and everything that has to be done, will be. There's no rush. Be gentle with yourself.
Sending hugs...