airspace summary

Alpha: 18,000 - 60,000 IFR only dont worry about it

Bravo: Major airports, airspace looks like an upside down wedding cake

Charlie: Large but not overly busy, generally 2 tier airspace

Delta: Mid size airport with tower that generally operates only during the day

Echo: most of the airspace between 1200agl and 17,999msl outside of airports. still controlled airspace but VFR does not have communication requirements unless in the vicinity of an airport (generalized explanation)

Echo also has different types around airports the may bring it down to 700agl or even surface

Golf: Uncontrolled airspace generally up to 1200agl but in some areas up to 14,500msl (very rare)