--NMM--
For NMM simply click "Download with Manager" button and activate the mod to initialize the installer.

--Wrye Bash--
For Wrye bash users use the "..download manually" link. Drop the downloaded zip file directly into your "..Bash Installers" folder. Under the Bain Installers tab pick ONE package prefixed by the word "Map". If you would like to use the optional "Clear Map Add-on" select this package, too.

--Manual Install--
For manual install users, extract the zip file of the map option you have downloaded. Inside the extracted folder, Copy the Data folder and paste it to where your SkyrimData folder is. It will ask you if you want to overwrite the Data folder. Say yes. This will merge the two Data folders together and place my mod with the correct file path. The file path should look like this:

STEAMSteamAppscommonskyrimDatatexturesterrainTamriel(this is where the .dds map files go)

Uninstall: Delete all .dds map files in the Tamriel folder.