Mech

https://en.wikipedia.org/wiki/Mechanical_engineering

360
http://www.mechanical360.net/

Aptitude
http://www.mechanicalaptitudetest.org/

in
http://www.mechanical.in/

Design
http://www.mechanicaldesignforum.com/

Tube
https://www.youtube.com/results?search_query=mech

Slides
http://www.slideshare.net/search/slideshow?searchfrom=header&q=mech