Bionumbers
http://www.bionumbers.org This website is a database of
useful biological numbers (with references!). It will help
you find both key numbers characterizing biological systems as
well as the experimental sources for those numbers. This
complements the approach we will often take of trying to determine
those numbers by thinking them up.
PyMol
http://www.pymol.org/ This viewer was developed by
the late Warren DeLano, with binaries now distributed
by Schrödinger. It is
OpenGL-based and is wrapped in Python for easy scripting.
The source code
is available without registration.
Sanjoy Mahajan's
delightful Street-Fighting
Mathematics effectively teaches many of the principles of
estimation we use in the course. You can buy it, or download it under
the Creative Commons License
here.