Not everyone's suited to do personal care, but you can still contribute to the person's life in your own way. There are so many ways to help; for example, you might help financially or offer the primary caregiver some time off.
Sensory Intake
This video clip is from "There is a Bridge: Alzheimer's Disease is not the end. Sometimes It Can be a Beginning" produced by Memory Bridge, the Foundation for Alzheimer's and Cultural Memory.