Mayo Clinic Center for Social Media
They have a free daily digest email you can sign up for or they do offer a more exclusive paid membership package as well as a social media boot camp

The Ragan’s Health Care Communication News website is full of wonderful articles

American Hospital Association
155 N. Wacker Drive, Suite 400
Chicago, IL 60606
Phone: 312-422-3000

325 7th Street, N.W.
Washington, DC 20004-2802
Phone: 202-638-1100

American Marketing Association - Lincoln Chapter
P.O. Box 82873
Lincoln, NE 68501-2873

Nebraska Hospital Association
3255 Salt Creek Circle, Suite 100
Lincoln, NE 68504-4778
Phone: 402-742-8140 • Fax: 402-742-8191

Society for Healthcare Strategy and Market Development (SHSMD)
One North Franklin, 31st Floor
Chicago, IL 60606
Phone: 312-422-3740 • Fax: 312-422-4579