If you have a Google account (and are signed in) then you can add your location. Click the 'square' icon at the top right of the map below, the map will open in a separate window. Type in your location (City/Country) in the search box, when found click on the marker that has now appeared on the map and click 'Add to Map' - added! Now click your marker, then click the pencil icon to be able to edit/add in your bio/details. Done!
If you have a website then feel free to add it to the profile when you edit your marker. People can view your details by click on the name in the left box (or on the marker on the map). Please be sensible with the info you add, other people can read it. Any problems click here and ask