April is usually when the NWS conducts Spotter Training. The training course is now online and is free and provides for a certificate and can be used in place of or in conjunction with the classroom training. The class in Winnebago County for 2013 has already occurred, but there will be several dates and locations offered. Check the NSW site for dates and times.
Here are some online courses for Emergency Communications and FEMA courses that provide background into the Incident Command System. These courses can be completed on-line using the links provided.