https://www.faasafety.gov/SPANS/event_details.aspx?eid=89019

"Speed to Fly Theory - What Is It and Why Should I Care?" Topic:
An introduction to SPEED TO FLY theory On Tuesday, February 19, 2019 at 20:00
Eastern Standard Time (17:00 PST, 18:00 MST, 19:00 CST, 15:00 HST, 16:00 AKST,
18:00 Arizona, 01:00 GMT)

Description:

While on glide, a pilot's two most important performance-related decisions are
how fast to fly and in what direction. This webinar discusses the former. Toward
that end, it discusses classic MacCready speed-to-fly (STF) theory, how to use
your STF-capable flight computer, when to temper or even ignore STF theory, and
final glide. Even the best pilots never know for sure (till perhaps after
they've landed) whether they were flying the optimum speed at any given time!

To view further details and registration information for this webinar, click
here.