Every few months, it seems a new floor covering product hits the market. If it’s not from a U.S. manufacturer, it’s from somewhere overseas. As an installer, it’s more often than not your job to determine how to install it, using the methods and equipment to best achieve your goal. And ready access to installation instructions, or any kind of instruction, is often not available.
Since you started out installing floor coverings, I bet virtually everything has changed. The products most assuredly have. The methods used to install these products have, as has the equipment required for the installation itself.