AutoDesk Design Academy: AutoCAD
Tutorials for AutoCAD designed for beginners through those seeking certification
https://academy.autodesk.com/software/autocad
AutoDesk Design Academy: Inventor
Beginner, Intermediate, and Advanced Tutorials for Inventor
https://academy.autodesk.com/software/inventor
AutoDesk Design Academy: 3DS Max
Video tutorials for the 3D modeling program AutoDesk 3DS Max
https://academy.autodesk.com/software/3ds-max
Chicago Brand - Caliper
A tutorial on how to read a dial caliper
http://www.chicagobrand.com/help/micrometers.html
Chicago Brand - Micrometer
A tutorial on how to read an outside micrometer
http://www.chicagobrand.com/help/micrometers.html
Core Electronics
Arduino tutorials
https://core-electronics.com.au/tutorials/arduino/
Electronics Hub
A series of tutorials for basic electronic components
https://www.electronicshub.org/tutorials/
Electronics Tutorials
A variety of electronics tutorials including specific components, power, logic, waveform generators, etc.
https://www.electronics-tutorials.ws/
FEMA - Using Engineer and Architect Scales
Lesson plan for teaching students to use Engineer and Architect Scales
https://www.usfa.fema.gov/downloads/pdf/nfa/engineer-architect-scales.pdf
FLL Casts
Video tutorials for constructing and programming robots
https://www.fllcasts.com/search/Vex?search=Vex
Robot C
Tutorials for programming VEX Robots
http://www.robotc.net/tutor/Cortex/cortexunits.php?platform=Cortex
Shapeways
A variety of tutorials related to 3D modeling and 3D printing
https://www.shapeways.com/tutorials/?li=bc
Sketch-up Tutorials
Video tutorials for Google Sketch-up
https://www.sketchup.com/learn
Vertanux
CAD/CAD/CAM tutorials for Inventor, Solid Works, PTC, Rhino, CREO, and others