MathWorld offers a definition of vanishing point; contains diagrams of one, two, and three point perspective drawings with arrows pointing to the vanishing points.

Get independent practice drawing three-dimensional figures. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.

This site from the University of Evansville is a great place for the aspiring artist to visit. Receive free professional advice and tips on basic drawing techniques. The site focuses on perspective drawing and shading.