Assuming you meerly want to stroke a path, then I can help.
Firstly and most important, if you want to stroke, you need to set up your stroking settings. What size brush (14pt hard) what color, and what opaquicty (100%).
Then, draw your line. Then, clik on the path tab in the pallette, then right click on the layer for the option to 'stroke path'. Each stroke should be on a new layer so it's easier o play with them later.
So new layer, pen tool, stroke.