I've recently started a small series of video tutorials with the first one being Write a Web App in Go. Each tutorial will have its own Github repo here where the commits will be in sync with the tutorials for anyone following along.
After this Go tutorial I'm thinking that I'll cover something involving Python3. Maybe a start-to-finish project using flask, tornado, django...? Or just an in-depth tour of a common library like requests, numpy, pandas, or pygame?