For more examples, see the help screens. The commands ParamPlot and ParamPlot3D are analagous to the plot and spacecurve commands you used last term. Both ParamPlot and ParamPlot3D will take a vector or a list of functions as their first argument. Don't forget to load the CalcP package if you have not already done so.
The Speed function can either give the speed at a fixed value of t, or give the speed as a vector expression involving t. See the examples below.