@Sean Brady - welcome to the D.C.!  Great question and you should get a lot of help here.

First, definitely watch the video linked by @Oliver Wilms in the earlier response.  It will help you understand how the InterSystems-based healthcare platforms tend to work best with the embedded source control paradigm due to how changes are made in the Management Portal and not just in VS Code.  

As you try to get Git set up, can you please confirm that you using the Embedded Git package?  https://community.intersystems.com/tags/embedded-git

You said you are having issues working with Git - could you please provide more details?

If you haven't, you should review the Branching Strategy doc on GitHub for Embedded Git (https://github.com/intersystems/git-source-control/blob/main/docs/hcc.md#general).  While it is in the HealthConnect Cloud section, @Pravin Barton has assured me it is generally applicable.

While you are working towards getting a proper Git-based progression in place, you can use Deployment Manager in the Portal (but you should stop using this once you have Embedded Git working).  This is the easiest way to grab things in bulk and move them between environments.  

Please note that HealthShare Registries are not yet covered by Source Control / Change Control hooks, so you will need to move those by hand or via custom scripting.  Those will come later this year - see the Global Summit presentation on the topic here: https://www.intersystems.com/change-control-for-healthshare-intersystems/

Hopefully this is enough to get you rolling.  Let us know what questions you may have!