Explore an open-source, self-hosted network and system monitoring tool in this 40-minute video tutorial. Learn about CheckMK's features, paid plans, and documentation before diving into the installation process on both virtual machines and bare metal. Follow along as the instructor demonstrates accessing the web UI, installing agents on monitored clients, and navigating the user interface. Gain insights into system overviews for monitored hosts and discover how to set up CheckMK in a Docker container. Conclude with important security steps, such as changing the default password, to ensure a secure monitoring environment.