In a national survey, 19 million Americans said they have a family member with Alzheimer's, and 37 million said they knew someone who had it. But when Rosette Teitel 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 available? When is it time to consider a nursing home and...