download link
extract en start the foca.exe in the bin folder
Simple example to extract some meta data:

Fill in your project name, domain website, alternative domains (if you know some), folder where to save documents, project date and project notes. Press +Create

Press the Search All button
Now FOCA will search google and bing for documents which can contain metadata. If you get lucky FOCA will list some:

Right click in the results and click download all. When the download is finished you can click Extract All Metadata.

If all goes fine you now have a list with the extracted metadata.