Katacodas
You can see all of my Katacoda courses at https://www.katacoda.com/drewkhoury/ (login with github or email) - or dive straight into the ones I've included below.
GSD Hello World Demo - Trust and Verify
Based on: https://github.com/contino/gsd-hello-world
The GSD "Hello World" app is written in Golang and wrapped in Docker via 3 Musketeers.
This repo is a demo of how you might implement a set of concepts that make up a "Trust and Verify" pipeline, which is a concept within the practice of GSD. This repo is a learning tool that can help you explore the concepts of GSD & Trust and Verify. The intention is to offer you an implementation that's simple enough for you to get hands-on quickly, with the opportunity to extend it for other use cases, or simply take the learnings into your existing software development for the concepts that apply to your use case.
GSD Hello World (Golang) - Trust and Verify Pipeline is an interactive learning module that shows the capabilities of the GSD - Trust and Verify Pipeline.
TDD wtih Java
Below is an Introduction to TDD with Java that I developed with a lot of help from Craig Kilpatrick.