Web Resources
Hyperphysics (Basic Concepts in Physics)
Wolfram Alpha (online science resource)
Scilab (Numerical computation software)
Maxima (Symbolic manipulation software)
New Scientist (magazine)
Physics World (magazine)
Physics Update (latest developments)
arXiv (physics research preprints)
The Meaning of Relativity, by A. Einstein (non-technical version)
An Outline of General Theory of Relativity by A. Eddington (non-technical version)
Free Maths and Science Ebooks and Web-books by SRI