To learn how to UV map, let's put a teapot in Blender. Today, this will work pretty well, but normally a teapot wouldn't fit in a Blender.
You can download Blender at blender.org. While there, I highly recommend the tutorials on the site at bit.ly/BlendToots. Packt also has quite a few good books on Blender. You can find these at: http://bit.ly/BlenderBooks. You might be a little confused or frustrated with basic cursor movements, and selecting if you haven't been through these tutorials; seeing an animation of the cursor moving helps more than writing about it would. In particular, please watch the cursor selection tutorials under Getting Started at: http://bit.ly/BlendStart.
To start texturing, we will use the venerable Utah ...