USEFUL or INTERERESTING LINKS
Differential Geometry and Topology of Curves and Surfaces (Math 497C)
Spring 2004, Penn State
Famous Curves Index
An excellent source for exploring the geometry of famous plane curves.
Visual Dictionary of Planar Curves
Another great place to learn about curves in the plane.
Alfred Gray's Page
Here you can download Gray's Mathemattica Packages and sample notebooks, or browse the picture Galleries.
Mathematica Information Center
A huge depository of various Mathematica notebooks.
Differential geometry and topology, from Wikipedia, the free encyclopedia
A very nice and extensive source for learning about geometry and topology.
Enormous collection of links to interesting geometry on the Web.
Mathematical Reviews on the Web. Research papers on any Mathematical topic.