To implement this you’ll need an Google Maps API key to replace the one I used (which is for me site and won’t work elsewhere due to how google set up the API keys). You can get one of those here:
To use you simple need to include the script in the header, the div where you want the map to be located (size that as we want) then fill in the address variable.
Again more documentation, a script breakdown, and an example at the link. If you have a question feel free to post a comment.