Hello
@SAKD and welcome to this friendly and supportive forum. There is a lot of shared experience of dementia to be found here, so I am glad you have found us.
I am sorry to read of your husband's recent diagnosis. It will have come as a shock even if you were half expecting it, I'm not going to bombard you with loads of information at this point as your thoughts and emotions are undoubtedly all over the place right now.
One important practical matter you would be wise to sort sooner rather than later is Lasting Power of Attorney. The link below gives more information which may help.
How to make a lasting power of attorney (LPA): starting an application online, choosing an attorney, certifying a copy, changing an LPA.
www.gov.uk
I hope you will find this forum useful for information, and any particular advice if you need it, do just ask, as members here really do want to help.
It's also good for letting off a bit of steam when you need to!