Here is a good site to learn basic electronics

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If you are just learning about electronics here is a good site to start, its easy to read.

It gives you an anatomically correct insight into the underlying physical phenomena needed to accurately understand the behaviour of semiconductors, capacitors, or inductors etc, but is far more readable and way shorter than a typical academic textbook.
The target audience is people who want to meaningfully tinker with complex electronic circuits.

http://lcamtuf.coredump.cx/electronics/