Generally from surface to 2500 ft above airport elevation.
Class E VFR above 10 000 requirements are ...
500 ft below 1000 ft above
2000 ft Horizontal
1000 ft below
1000 ft above
1 SM Horizontal
Clear of clouds
Contain airspace of define dimensions. Here the flight of aircraft is prohibited. Such areas are establish for security.
this airspace has vertical and lateral limits establish for military training, VFR traffic should exercise extreme caution.
The flights are not prohibited, but are subject to some restrictions. This areas denote the existence of unusual, often invisible, hazards to aircrafts such as artillery firing, aerial gunnery, or guided missiles. You need a clearance to penetrate into a restricted area active.
Military operations need a clearance?
When do we need mode C transponder?
Mode C Belt.
Temporary Flight Restriction:
Are the same as the restricted but, this areas are not factor for commercial aviation, because when a airplanes pass through this area the operation stop.
An area restricted to air travel due to hazards condition, special event, or general warning, This area contain Time, altitude, and radius.
Airspace extending 3 miles outward from the coast of the USA. This airspace have the same hazards thing that the restricted, the only thing is you do not need a clearance if the warning area is on intentional waters, also there are warning areas on domestic waters.