i have a question that is should i have a own website with me first?
i have no idea about this step
i try the everything i can do
but it doesn't work.....
so my question is should i have to build a new website for myself??
With this "tool" you connecting some machine where are map services like image, feature, etc. stored.
There are many of arcgis server.
Basic server is Folder: / .
Here is a detailed step by step guide, how to connect arcgis server.
I dont know what software you have. If you dont have ArcGIS for Server, you cannot make your own arcgis server (server connection). Its not a website. Its server (machine) where are running some map services.
Example: Iam using arcgis server of State Administration of Land Surveying and Cadastre (ags.cuzk.cz/arcgis/rest/services) to upload detailed Imagery map of Czech republic or Hillshade into my ArcMap (ArcGIS online). There are lots of servers like this one or by ESRi etc. Type in google arcgis/rest/services
To create your own server you need 1) server (machine or cloud) and 2) instaled ArcGIS for Server on it.
You would have to have a license for arcgis server to create a "web site" (actually a REST endpoint to ArcGIS Server services)...or you can find some that exist and are public for testing. If you are a student and getting access to the software thru them, they may already have a server set up for you to use. Check with them.