docs: Add config tutorial

sites/docs/src/content/docs/get_started/run-your-first-pipeline.md

@@ -167,6 +167,7 @@ Version information is automatically recorded in pipeline reports in the `pipeli
 
 Now that you've successfully run your first nf-core pipeline:
 
+- Complete the [Configure a pipeline run](../running/tutorials/configure-a-pipeline-run.md) tutorial, a more comprehensive, hands-on walkthrough of every configuration layer (environment variables, parameters, profiles, custom config files, and `ext.args`) using `nf-core/demo` as the worked example
 - Browse the [nf-core pipeline catalog](https://nf-co.re/pipelines) to find workflows for your research area
 - Learn to [adjust resource requirements and parameters](../running/configuration/overview.md) for your infrastructure
 - Join the [nf-core Slack](https://nf-co.re/join/slack) community

sites/docs/src/content/docs/running/overview.md

@@ -25,6 +25,12 @@ nf-core pipelines can be configured to work with different execution environment
 - **[System requirements](configuration/nextflow-for-your-system):** Guidance on configuring pipelines to match your system's capabilities, including resource allocation, executors, and tool arguments
 - **[Configuration troubleshooting](configuration/troubleshooting):** Troubleshoot nf-core pipeline runs
 
+## Tutorials
+
+Hands-on walkthroughs that build on the reference material above.
+
+- **[Configure a pipeline run](tutorials/configure-a-pipeline-run):** Hands-on tutorial using nf-core/demo to configure a run with environment variables, parameters, and config files
+
 ## Reference data
 
 Many nf-core pipelines require reference genomes and annotation files.