I started making video presentations of the Swift Programming Language Book (the version from swift.org, which is published under the Creative Commons attribution license). It is my hope these may be useful for education or review while on the treadmill.
Monetization off: no ads.
A Swift Tour (21 minutes): The Swift Programming Language Book: A Swift Tour - The Video Version - YouTube
Strings and Characters (29 minutes): The Swift Programming Language Book: Strings and Characters - The Video Version - YouTube
Enumerations (15 minutes): The Swift Programming Language Book: Enumerations - The Video Version - YouTube
My production rate is about 1 per week.
I also created a public Github repository with Swift education-related slide decks (only a few so far). Pull requests welcome. If there is another repository already filled with Swift education decks, please let me know!