Primarily what I did during Wikimania was chew on pens.
However, I also gave some talks.
The first one was on Creative Commons 4.0, with Kat Walsh. While targeted at Wikimedians, this may be of interest to others who want to learn about CC 4.0 as well.
Second one was on Open Source Hygiene, with Stephen LaPorte. This one is again Wikimedia-specific (and I’m afraid less useful without the speaker notes) but may be of interest to open source developers more generally.
The final one was on sharing; video is below (and I’ll share the slides once I figure out how best to embed the notes, which are pretty key to understanding the slides):