Canva is a free online graphic design tool that allows users to create social media graphics, presentations, posters and other visual content using templates and stock images. The tutorial demonstrates how to sign up for a Canva account using Google, navigate the interface, and create a basic greeting card design. Key steps include selecting a template, adding text, searching for images to insert, customizing colors and layouts, and downloading or sharing the finished design. With Canva, users can learn graphic design basics and create professional looking visuals without design experience.