The installation of this extension is very simple. Just connect to the Typo3 Extension Repository and download «VD / Geomap» (vd_geomap), located in the frontend plugin section. Note that you will also need to download version 2.8 of the «Developer API» extension (api_macmade), as it will be needed by the plugin.
On a page, create a new content element and choose «VD / Geomap» from the list.
You'll now be able to configure the instance of the plugin. On the first tab, just add the coordinates of the map, and decide if you want to display the map directly.
The second tab contains informations about how to find geographic coordinates.