Many of the example apps have a step-by-step guide embedded in the project (see the Setup.md file) e.g.
Alexa: https://gomix.com/#!/project/alexa-skill
Parse: https://gomix.com/#!/project/parse-server
Slack: https://gomix.com/#!/project/slack-bot
But we'll be sure to work on some video examples - I appreciate people learn in different ways. For a quick overview of Gomix, see https://gomix.com/about/