When my own Mum died, someone sent me this article. I have since shared it numerous times and I hope it can provide you some comfort, too.
64 Things I Wish Someone Had Told Me About Grief
I also admire the work of Dr Lucy Hone and often share this short video (~16 minutes).
Dr Lucy Hone's incredible Ted Talk about Grief
New Zealand Government also has some really useful advice on all practical aspects of losing a loved one.
NZ Government's Death and Bereavement pages
Holdmine is a great, secure online repository for saving your own information - everything from end of life wishes to the details about your insurances, where your Will is stored and all other aspects of modern life that need untangling when someone dies.
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Families bereaved by suicide experience complex overwhelming emotions, but support is available;