Take Q3 bus to Far Rockaway, then transfer to train.
no train from jfk to nj.... but u can take AirTran to Jamaica station, than E train to Manhattan ,than another train to nj
Not easily done. Here's a site with various ways. Train/bus about $30. Lyft/Uber $100+ https://www.rome2rio.com/s/New-York-JFK-Airport-JFK/Irvington-NJ-USA
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