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Even without GIS skills, you can make maps from certain kinds of data from the following sites--some of them are Penn-only, while others are free to the public. The restriction is that you must use the data they provide, rather than uploading your own.
This data visualization site from IBM allows you to upload and map data from countries and US counties. Requires free registration. All uploaded data sets become publicly viewable. (May work better on IE.)
The Penn Libraries has deployed a virtual computer lab (vLab) for students to access software applications normally accessible in Library computer labs inlcuding ArcGIS. Access and registration information is available at: https://guides.library.upenn.edu/vlab