hello , I am new to ArcGis I have no idea how its works , can anyone help me to find a good learning guide or something .
ESRI has self study courses available through their training section and you can find many videos on YouTube like this one which can teach you the basic ropes.
There are a lot of free resources. See:
For ArcGIS Online (Web GIS):
https://learn.arcgis.com/en/paths/try-arcgis-online/
https://learn.arcgis.com/en/paths/modern-gis-mapping-and-cartography/
https://learn.arcgis.com/en/paths/modern-gis-sharing-presenting-spatial-information/
For ArcGIS Pro (Desktop GIS):
https://learn.arcgis.com/en/projects/get-started-with-arcgis-pro/
https://learn.arcgis.com/en/paths/common-skills-for-working-with-data-in-arcgis-pro/
