A member asked me about a simple Great Circle Chart. Here is one from http://www.clublog.org to get you started. It is centered on FN42 the grid square for Nashua, NH.
This will give you an idea where you might orient you antenna, whether it be a simple dipole or multi-element beam. North is True North so it you use a compass, you must compensate for the angle of declination which is “about” 15 degrees. This is derives from here: http://www.ngdc.noaa.gov/geomag-web/#declination
42° 44′ 56″ N
71° 27′ 54″ W
14° 40′ W ± 0° 22′ changing by 0° 4′ E per year
And, if you want something more precise, the North Jersey DX Association has a great tool for listing the precise beam headings, both short and long path, distance, lat/long, Continent, and CQ zone: