We have lots of support documents for creating sites, including how-tos, trouble shootings or the related topics.
Enable debug mode on Shifter
Shifter Github Plugin/Theme Installer: Working with development plugins or themes for Shifter
How to update your plugin/theme.
Simple Basic Authentication for Shifter Static Sites
This simple basic authentication feature is useful in cases where you would like to share a website that is still under development with only certain outside parties.
Shifter Local Explained
Run Shifter WordPress Image Localy.