The most basic jqPlot chart takes a series of data and plots a line. No options need to be supplied. Data is passed in as an array of series. A series can be either an array of y values or an array of [x,y] data pairs. If y values only, x values are assigned like 1, 2, 3, ... Note, for this plot you don't need any plugins.
The following plot uses a number of options to set the title, add axis labels, and shows how to use the canvasAxisLabelRenderer plugin to provide rotated axis labels.
There are numerous line style options to control how the lines and markers are displayed.