Lots of different articles on electrical engineering, guides to using electrical software, explanations of various theorems and laws and even research papers

Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts.

A creation of Wisconsin's Technical colleges -
lots of topics with audio presentations and simple, easy to understand explanations.

Virtual classes with subcategories such as 3D printing, CNC, electronic etc

This site covers different disciplines of science and engineering at undergrad and postgrad level. Login online to get free access to various data and tools including web resources, animated demonstrations, videos, electronic books etc.

Free super calculator and more