Is help available for families to assist in coping with a loved one's alzheimer's disease?

Yes. There are support groups for family members and caregivers of those with dementia. Some groups are free support groups and others are run by professionals or organizations. There are also online supports available. The local aging services agency can also be a resource.
Lots of resources. Here is a compiled list of resources from neuropsychologists around the country http://cpancf.Com/pdf/dementia%20resources%20for%20caregivers.Pdf.