Festo offers 2D CAD drawings and 3D CAD models of nearly all their products at www.festo.com. Although registration is necessary in order to use this feature, it is free. After registering, you can choose which drawings or models you would like, and the images are emailed to you within a few minutes. Approximately 80 CAD formats can currently be supported.
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies.
You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived.
So if you can't attend live, attend at your convenience.