I posted up thread , here are the things I found useful .
It is to soon for you to worry about most of this now but hopefully when you are ready you can come back to this post and find some useful advice.
https://www.gov.uk/bereavement-support-payment
This is a one off payment , then monthly payments for ( i think) a year . This money is not means tested at all and can be spent on what ever you want .
It is very easy to claim and gets payed straight into your bank account , it will not affect any benefits you have.
https://www.gov.uk/after-a-death/organisations-you-need-to-contact-and-tell-us-once
If you have this service ( unfortunately not all councils do have ) all you need to do is fill in the form once and they will let all of the relevant groups know . this saves lot of time , hassles and repeating yourself.
If your DH has a will contact whomever holds it and tell them and ask what the next step is , my DH did not have a will so I can not advice much more on this subject, .
Because your DH died at home it is very likely that a post mortem will have to be carried out , tis can take quite a while ( it took them 7 weeks for my DH's) so ask for several interim death certificates .
You will need them at banks to close / alter bank accounts
Rent / mortgage payments
Council tax amendments
car insurance / selling or scrapping car
and anything else official that has your DHs name on that needs to be cancelled / altered
All of the above places will only accept original , do not photocopy them .
Go through Dhs bank account and look for any subscriptions that can be cancelled , ones to gyms, magazines, clubs , affiliations etc .
Also check and cancel any orders he has made to amazon , ebay , etc .
Start discussing with close family what to do about the funeral / cremation , what do you want , where , when , and a rough list of who / numbers . this can be amended and finalised later but its a good idea to discuss it early on so that nobody has a set plan in their mind and doesn't want to change it.
YOU have last say in what happens but try to be sympathetic to DCs , MIL / FIL Dh;s siblings etc .
If tempers get heated during this discussion tell everyone that you all need a break and will discuss it at x time when tempers have cooled . Nobody benefits from arguments about tis kind of thing.
Keep two small ( different looking ) note pads with you at all times .
one to fill in with your thoughts / emotions / memories , write everything down no matter how sad , angry , lonely , happy you feel , I read back through mine ever now and then and it reminds me of the hell I went through and that there is a light at the end of the tunnel if you have DCs ask them to add to it or keep their own if they are old enough .
The other is a To Do list , the strangest things will pop into your head that need doing some surrounding your DH , other more mundane things like shopping list docs appointments , DCs school stuff .
If he is listed as your next of kin at work , on your phone or else where get that changed to your DCs if they are old enough / parents / siblings / PIL
There is absolutely no doubt that this first few days are going to be incredibly tough, I really hope you have someone you can lean on.
For me it was my DB , we have always been close but my god without him to help me through it there is no way I would of coped .
That said , the reason I joined MN is because I needed advice he couldn't give and I also need to say some things about my DH and my family and so called friends that I couldn't say in real life .
So like many be for me and many after , please feel free to rant , curse , cry , laugh , question , and what ever else you need .
There are lots of us out hear waiting to help and and advise .