4)Get off at Newark Penn station. Exit train station and go through exit that says "raymond street" to the bus lanes. Get on the #62 bus to Newark airport which stops at all terminals.
(cost 1.50)
An alternative here is to walk west on Market Street to Broad St and take
go 28. Works well if you have a small carry-on (just like the rest of the trip). The 62 also stops there, but it is more rare, only half of the trips visit the airport and and the 62 makes more stops than
go 28.