You seeing main window of GPS-Trace service:
Place pointer on Map. Click and holding left button, drag mouse at any directions - map is moving. Scroll mouse wheel up and down - map is zooming.
Learn state icons by mooving mouse cursor above them and reading tooltips. Monitor devices movements of stays.
Goto "Tracks". Select device, style and time interval watch on map device movement history. Changing parameters and device you can see full picture of movements and stays of your friends.
Create Geozones and Notifications corresponding modes.
Open Log you may see you activity records.
And most important! Press "Settings" at top and set your rules. Select your time and create your device by activating its. Adding your own types of maps to background.