So I thought of practicing some gamedev skills by making a map for CS:GO.
Map Created by : Gearspecs (http://www.LibreGarage.com)
Download from : http://steamcommunity.com/sharedfiles/filedetails/?id=948727101
or Game Banana : http://gamebanana.com/maps/195806
Official Discussion forum : https://www.facebook.com/groups/csgobd
All I have to say is that Valve Hammer Editor is far more advanced than anything I have ever used.