If you have a loved one with dementia, my first suggestion would be to find the very best doctors possible.
My second piece of advice would be to go to the Alzheimer's Reading Room. It's a free blog that focuses on Alzheimer's disease and the art of Alzheimer's caregiving and to which I am also a contributor.
Its goal is to educate, sometimes entertain, and always empower Alzheimer's caregivers, their families and the entire Alzheimer's community. It's the nation's largest blog on Alzheimer's and the number one source of news about Alzheimer's disease and caregiving.