All library computers have PowerPoint installed. When you open the program, select "New" document then choose the "Infographics" template. There are several templates already available for use.
For more tutorial help, search YouTube for "Powerpoint Infographics" and also Linkedin Learning.
All library computers have Word installed.
For more tutorial help, search YouTube for "Word Infographcs" or "Microsoft Word Infographics"
Some are free and some are subscription with free trials. Make sure your "free" access doesn't automatically put watermarks on your design.