This thread is intended to be a repository for useful on-line references that HBA'ers might find useful in a manner similar to the closed thread found here: http://www.homebuiltairplanes.com/fo...ead.php?t=8950
A resource that covers many of the fundamentals of the physics of flight can be found at https://www.grc.nasa.gov/WWW/K-12/airplane/bga.html
One level up is http://www.princeton.edu/~stengel/MAE331.html
There is much useful information that can be found at the link's, including definitions that could make discussions here more efficient.
Please add your links.