Free Online Educational Material

[jerry]

Khan Academy - Online Video training for free.
http://www.khanacademy.org/

Woodworker's Resource - over 175 Books online and free for wood and metalworking
http://www.evenfallstudios.com/woodwork ... brary.html

Machinist' handbook - Good foundation and formula reference.
http://www.archive.org/details/cu31924003638024

[Carlton]

thanks,
Linear Algerbra is on the top of far right
and inverse is right after multiplication

I'll be sure and see if he has any easier algorethem I could program in javascript (assuming it isn't a browser bug)

[innovate1]

Here is a free book on DSP that claims to be lighter on high level math than most DSP material. The links to the PDF files are a bit elusive -- if you look at the chapters it shows up on some pages but didn't seem to be consistent. Once I got one I just modified the URL for the other chapters.

http://www.dspguide.com/