I have my own base map that i created, I have an excel spread sheet with lat, longs and I want to plot it into my map.
What software are you using to plot these points?
If you are using ArcGIS Online, you can essentially drag and drop a CSV file with lat/long onto the map and it will plot the points (using Chrome or Firefox).
CSV, TXT, and GPX files—ArcGIS Online Help | ArcGIS
Hi I am using ArcMap Desk top
Please follow the directions listed here:
Adding x,y coordinate data as a layer—Help | ArcGIS for Desktop