Canva is a graphic design platform that allows users to create social media graphics, presentations, posters and other visual content. The free plan allows the user to create and store graphics online up to 1GB. It is available on both web and mobile. Learn how to design graphics  using Canva in this video.

https://www.canva.com/ 

Adobe Spark is a web and mobile design app that allows anyone to create visual content. The Adobe Spark Starter Plan for both the website (spark.adobe.com) and the iOS apps (Spark Video, Spark Page, and Spark Post) are free. Learn how to create graphic online free using Adobe Spark in this video.

https://spark.adobe.com/ 

Infographic is a visual representation of data, information, or knowledge that intended to convey a subject matter or message clearly and quickly. Learn the design process, tools that you can use to design infographics and the types of infographic in this video. 

Learn how to automatically remove a background and replace it with a transparency, solid color, or background image with just a few clicks using Online Tools.

Learn to use the the remove background feature in PowerPoint to eliminate distracting backgrounds of a picture.