ClickHouse is a fast database management system that has undergone significant improvements in its documentation, with a new collection of content aimed at helping developers, admins, architects, and analysts effectively use the platform. The updated documentation includes a redesigned Quick Start and Tutorial, guides on connecting popular UI/BI tools and external systems, user guides covering fundamental and advanced topics, and a Reference section providing technical details. The project encourages users to contribute new articles and user guides through a public repository under a Creative Commons license. With incomplete or outdated documentation being a common issue in open-source projects, ClickHouse aims to set an example for contributing to documentation.