Download the "empty" dimension with /iris studio download empty
Open the VSCode editor with /iris studio vscode empty
You should now see this
The single most important thing to remember is using ctrl + space anywhere in a file. It shows you all auto-completions possible at that position. Press the up & down arrow keys to navigate through them and show descriptions.
The second most important is that you can hover your mouse over any variable for a description / explanation of that variable.
Note how the title of the window contains (Workspace). If your window does not show this, you have opened the folder, instead of the workspace.
If you have openend the folder, you will have no autocompletions or tooltips, so make sure to open the pack with /iris studio vscode!
If you can do all those steps without trouble, you are good to go!
If you find yourself stuck at any point in this tutorial, contact support.