ARRL Certification and Continuing Education (C-CE) courses
http://www.arrl.org/cce/

FEMA ICS self-study courses.
http://training.fema.gov/EMIWeb/IS/crslist.asp

With recommendation to first complete
ICS-100
ICS-200
ICS-700

Second recommendation is to complete
ICS-546
ICS-800

These are no cost courses.