According to the Alzheimer's Association, one in ten persons over 65 and nearly half of those over 85 have Alzheimer's disease. In a national survey, 19 million Americans said they knew someone who had it. But when the author found herself in the role of caregiver to her ailing husband, she could find no books that answered her practical needs: How do you give a 170-pound man a shower? How do you pick him up when he falls? What support networks are...