CTO Handbook and Time Portal
A free handbook for startup CTOs and a game that involves you identifying a time and a place.
Startup CTO Handbook
I have not read this yet but one for me to save for the future. Just looking at the headings it looks like I should be able to pick and choose certain sections when needed.
Time Portal
If you have tried Geoguessr then this is the next level. This is placing a location and time in history - really cool (and difficult). Although some of the images are not “accurate” it is still a fun exercise.