The text discusses the author's experience with ClickHouse, a columnar database designed for real-time data and analytics. It emphasizes the importance of learning ClickHouse due to its growing popularity and unique capabilities compared to other databases. The author provides tips on how not to learn ClickHouse, such as assuming it is similar to relational databases like Postgres. Instead, they recommend using resources provided by ClickHouse, including documentation and training programs. They also suggest taking breaks during learning and becoming comfortable with the documentation for better understanding of functions and syntax. Finally, the author shares tips on preparing for the ClickHouse Developer certification exam.