By this I mean a new fact, a new skill or a new piece of knowledge.
Not "learning in progress", just something you now know/can do that you didn't/couldn't before.
I'll kick off by confessing that I only learned what a Prusik Hitch was this week.
I shall be using it in anger on Saturday night to pitch my new DD tarp so it is very good timing!
Over to m'learned friends...