Essendon Airport is situateed on 305 hectares, 11 kilometres from Melbourne's Central Business District and 5 kilometres from Melbourne Airport. Essendon Airport specialises in corporate jet, aircraft maintenance, airfreight, regional and interstate charters and emergency air services activities. Combined, these operators undertake more than 65,000 annual aircraft movements into the facility.
Essendon Airport is a very unique airfield. It's the only airfield in Victoria that shares airspace with a major international airport. This means that there are some really interesting procedures that differ from a lot of G/A airfields around the world. First, some pictures :)
The following image shows Essendon Towers Airspace.

This is just a list of general tips for Essendon.
Essendon Airport handles a lot of VFR aircraft. This includes pilot training, joy flights, executive flights, medical responses and much more. To control the Essendon airspace effectively, you need to know these main VFR fixes.
The usual inbound clearances given depends on which runways are active. The most common are shown below. Click the route to see the TAATS view of the route in question.
In heavy traffic, or if it makes a situation easier, traffic may be layered at 1500ft and 2000ft as required.
Departing clearances are usually issued direct to one of the following waypoints at 1500ft.
From those points, the aircraft operate OCTA and have no further requirements to EN.
IFR clearances are usually either an Essendon 2 departure or a Visual departure onto a heading assigned by ML_APP. Upon departure, the aircraft should be directed to contact departures (usually ML_APP) when passing 2500ft on climb.