Some Recommended Resources:
1. Airspace For Everyone Handout: https://www.aopa.org/-/media/Files/AOPA/Home/Pilot-Resources/ASI/Safety-Advisors/sa02.pdf
2. Know Before you Go Course: https://www.aopa.org/training-and-safety/online-learning/online-courses/know-before-you-go
Overview of G and E Airspace.
Class E (700' above the surface)
Class E to the Surface
Very few areas of Class G above 1200' feet still exist in the United States. This is a depiction that shows a sizable portion on the right of the image.
Class D (top at 2800' MSL)
Class D (top at 3400' MSL) surrounded by E that drops to 700'
Class D with a Class E to the Surface extension.
Class C with an odd shape due to rising terrain. (Class D below Class C also depicted. The minus sign indicates that 2500' is not included. The Class D airspace goes to 2499')
Class B Airspace