When you become a caregiver, you suddenly have a million questions. How are you supposed to take care of another adult? What should he be eating? Can she still drive? Get some answers.
Check into local resources for caregivers. Some organizations -- like the Red Cross, the National Family Caregivers Association, or the local Area Agency on Aging -- may offer classes in caregiving that could be invaluable.
You could also find a geriatric caseworker or geriatric care manager who can help identify your problems and resolve them.