All settings can be found by going to Tools -> Options -> Web Essentials.
Settings can either be global or specific to any solution. By scoping settings to individual solution, you can ensure that all team members are using the same settings.
To enable solution settings, right-click any item in Solution Explorer and click "Create solution settings".
Any text based file can be bundled using Web Essentials.
These bundle files are automatically updated whenever one of the source files change.
Just right-click 2 or more CSS/JS files and click "Create CSS/JS bundle file".
These menu items are shortcuts to solution wide commands.
They can be found under Build -> Web Essentials.