I have multiple shape files of my country, its states and cities. I want them to display in map i.e. First layer is country, then states-layer and then cities layer. I only know that to do this, first of all these files have to be uploaded in Geo Server , installed on Server, then somehow Geo Server is requested to give desired shape-files. Please help me how it can be done i.e. upload files in Geo Server, How to request it and add shape-file into webpage.