Visual Studio Code has so many extensions that it takes a long time to choose which one to use. Let me share with my favorites. Just a list with a brief descriptions.
This extension styles css/web colors found in your document.
The Remote - SSH extension lets you use any remote machine with a SSH server as your development environment. This can greatly simplify development and troubleshooting in a wide variety of situations.
IntelliSense for CSS class names in HTML
Shows image preview in the gutter and on hover.
Ctrl-D Duplicate the current line or the selected lines/text.