Most of you will have access to Excel and Google Sheets to create your own charts and graphs. Below are just a few other options to make charts, graphs, infographics, and other graphics, but there are many more tools.
Creative Commons (CC) is a nonprofit organization that works "to increase the amount of creativity (cultural, educational, and scientific content) in 'the commons' — the body of work that is available to the public for free and legal sharing, use, repurposing, and remixing" ("What We Do").
Here is a wiki on best practices for how to give attribution (credit) to images with CC licenses.
Just a few sites to find stock images, though there are many other options. Make sure to properly attribute images if needed.