The document describes Screencast-o-matic, a free and browser-based screen recording tool that allows users to record their computer screen and share videos online. It can be used by teachers, students, how-to experts, and others to create engaging video content without installation. The tool is easy to use, requiring users to log in, select the recording area, start recording, and then choose to save or share their video online or locally. Some limitations include a 15 minute recording limit and inability to directly edit recordings without upgrading to a paid Pro account.