This is the first thing I clicked on after registering and already I have enough material to keep me busy for years. Here are a few more I already had in the favorites.
BTW: The aforementioned schools are not alone. A google search for "open courseware" will prevent you from sleeping again...ever.
(These are exactly what they sound like. Not MIT but another handy source of info when needed.)
http://www.learnthat.com/
Free-Ed.Net
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I'm a pre transfer aero & mfe engineering student so here are my toys. Anything you can imagine in your mind to metal as fast as you can find a community college with a CAD/CAM lab. More on my other machine if anyone wants but the things head more towards the company in-service format rather than the university lecture style. They all accomplish the same for me.
(Disclaimer: I copied the some of descriptions below if they seem a little commercial. I have no connection to any of these sites beyond being a free registered user.)
http://www.rhino3d.com/
Modeling tools for designers
(NURBS Based. If anyone has a free parametric program that beats Solidworks
for the love of all...send everyone the link. Also check out the resources page for 3d modeling, architecture, FEA, animation resources and more.
http://www.cncportal.com/
Whether you are a professional CNC machinist, a hobbyist or a student this site is dedicated to bring to you some of the resources available on the web to help you make your CNC programming easier.
(Free 3D Model Based G-code generators)
3DCADTips.com
Searches the Web daily for new and existing CAD tips, tutorials and more, to add to its growing online directories.