From Wikitronics

Contents 1 Electronic Component Search Engines 2 DSP Related 3 Extremely Good Set of Books on Electric Circuits 3.1 Great Tutorials by the same Author

[edit] Electronic Component Search Engines

SupplyFrame

[edit] DSP Related

http://www.dspguide.com/pdfbook.htm

[edit] Extremely Good Set of Books on Electric Circuits

http://www.ibiblio.org/obp/electricCircuits/

[edit] Great Tutorials by the same Author

http://www.ibiblio.org/obp/books/socratic/