You can use this glass cleaner just like any other glass cleaner.
Simply spray onto any glass surface (or onto a cleaning cloth) and wipe.
Using a lint-free cloth or paper towel will give you the best results. I have found that regular microfiber cloths don't work as well as this specific glass cleaning cloth. This is all I use for cleaning glass surfaces now!
It's best to shake before using each time to make sure all of the ingredients are thoroughly mixed together.