This will open a file menu where you can select the FLIP Fluids addon file.
button at the bottom of the Add-ons menu.
Open the Blender User Preferences menu and select the Add-ons tab ( File > User Preferences > Add-ons).
The easiest way to install the FLIP Fluids addon is to do so through directly through Blender: If you are updating the addon to a new version, the previous version must be first uninstalled. Only one version of the addon should be installed at a time.
What is available in the FLIP Fluids product downloads?.
How do I download the FLIP Fluids addon?.
Instructions for Blender 2.8 can be found on this page: Addon Installation and Uninstallation (Blender 2.8) These instructions will detail how to install or uninstall the the FLIP Fluids addon for Blender 2.79.