This incredibly comprehensive site offers 24 free online modules that explain a wide variety of concepts within electrical engineering. Each module is presented in a style similar to that of a textbook, with detailed explanations of concepts, discussions of underlying theory, and practice problems with solutions. Topics include electromagnetics, digital computers and logic, fiber optics, and many...

The first Scout Report for Science and Engineering is available, annotating 22 sites in the fields of natural and physical science, mathematics and engineering.