How we can learn arcmap on internet any sites or groups?
Hassam,
I would take a look at Esri Training http://www.esri.com/training/mainas a starting point.
Jim
James
Thank you so much... Where are you from? And what are your skills?
You can also try this : ArcGIS Help (10.2, 10.2.1, and 10.2.2) https://training.esri.com/gateway/index.cfm?fa=catalog.webCourseDetail&courseid=2202