At this year's MWLUG, I presented two sessions: one on using nginx as a reverse proxy and load balancer, and one on structured XPages development.
Normally, the next step would be to post the slides, but my decks aren't particularly useful on their own - they were small 8-slide affairs that mostly served as a memory assistance to me, one sight gag, and then a "Demo" slide where I switched to the normal screen for the actual code.
So my plan instead is to blog with the details. The latter session's blog posts actually mostly exist already; I just need to finish the series and provide a capping-off. The nginx stuff, though, doesn't exist yet, and I hope to post my configs and an explanation of the basic process soon enough.