IFL2 is off to the proof-reader. So, for some weeks, time to think of other things.
A while back, I constructed a webpage linking to online materials on category theory at an introductory/middling level, including lecture notes, (legally available!) books, and videos of lectures, more than 50 items altogether. Here it is!
I initially wrote this really for my own use, to keep track of things I found. But the page has got over 25K visits in the last year, so obviously some others are finding it useful too.
This page of links hasn’t had much attention in recent months while IFL2 was occupying my mind. However, I’ve just now updated it, removed a couple of dead links and corrected some others. Please do let me know of appropriate recent materials I should be adding to the list — and do spread the word to students who might find it useful.