In May 2021, the Arc of Illinois hosted a webinar called, "An Introduction to Developmental Disability Resources, Organizations, and Terms." It was a webinar for family members and caregivers of children of all ages with disabilities and professionals new to developmental disability services/supports. The presenters shared information about services available to individuals with disabilities at each stage of life.
The slides from the presentation can be found at this link.
A recording of the presentation is also available; however, the slides are very detailed and listening to the recording may not be necessary. The recording can be found at this link.