Post checkins to your WordPress site, and using Google Places choose a location closest to your geo location.
Once you have installed the plugin, navigate to Settings > Checkin in the admin area.
To add a widget to your site go to Appearance > Widgets. Look for the 'WPCheckin' widget and drag to the appropraite widget area. Enter in a title to appear above the widget and click save.
To add WPCheckin using a shortcode use [checkin] on any post or page.
View individual checkin posts on the Checkins type page.
WPCheckin in action with the twenty thirteen theme.