In a brief tutorial video, Grafana Labs demonstrates how to build a Prometheus query using Grafana 8.3's Explore mode, which is accessible once Prometheus data sources are set up in Grafana. The video explains how users familiar with PromQL can directly input queries, while those new to it can benefit from an introduction and best practices guide. It highlights the functionality of the metrics browser, which assists users in discovering available metrics and constructing queries with specific metrics and labels. For those interested in further exploration, additional documentation is available, and Grafana Cloud offers a free tier to facilitate easy access to Grafana and Prometheus features.