If you are located in the Indianapolis metro area the Indiana Writers Center is a wonderful local resource.
They offer classes and workshops throughout the year on a variety of topics. The organization is wonderful about ensuring that there are offerings for writers of all skill levels
The Indiana Writers Center is located in north Broad Ripple in the Cultural Complex on the campus of the Indianapolis Art Center. Please note that they do not have regular hours. You will want to visit their website for a list of classes and other events: http://www.indianawriters.org.