You must take care of yourself in order to be able to take care of someone else on a sustained basis. Some caregivers just cannot bring themselves to take care of themselves until they have pushed to a limit where they become ill. Then it is OK to not take care of Mom of Dad because it is impossible. Unfortunately, then there are two people requiring care instead of one. Beware of such emotional traps.
Every state has an agency for the aging.
These may be listed as Agency for the Aging, Department for Aging, Commission on Aging, Division for Aging or the like. Your area may also have a local agency for the aging at a county or city level. These are excellent sources of information. Phone numbers can be found in the phone book. Most, if not all, states also have a LTC Ombudsman.