hello Andrea64
you've just successfully taken that first step by becoming a member of TP; it's an amazing community of people who are walking the road you are now starting on
so a warm welcome
you'll find lots of information here and plenty of folk who understand to share experiences with
I do suggest looking for what is available in their area here
https://www.alzheimers.org.uk/site/scripts/documents.php?categoryID=200121&_ga=1.61414895.213745934.1462100281#!/results/list?p=0&q=%7B%22place%22:%22linconshire%22,%22alz%22:false,%22cat%22:125%7D
if there's a local carers/dementia café, people there will have info that may well help
do contact their GP and consultant regularly to keep them up to date
consider applying for Attendance Allowance - if you think your mum doesn't qualify at the moment, at least you will have some idea of how to apply in the future - AGE UK and CAB can help you filling in the forms
do contact your Council and apply for a reduction in the Council Tax
and look into Powers of Attorney (maybe for them both, as none of us know what's around the corner); these will give the Attorneys very useful legal authority to act on your mums behalf
keep in mind that you are the same people today as you were just before the diagnosis, so don't panic you have time to gradually put in place any support you need - continue to enjoy your time together
and keep posting on TP
best wishes to you all