Link graph quickstart notebook

README.md

@@ -35,6 +35,10 @@ identify the exact data. The two Viewer configurations, `nodes` and `edges`,
 are tables from the same graph snapshot; join an edge's `source_id` and
 `target_id` to node `id`.
 
+## Get started in 10 minutes
+
+Try the [runnable notebook](https://github.com/causals-lab/community/blob/main/quickstart/quickstart.ipynb) or [open it in Colab](https://colab.research.google.com/github/causals-lab/community/blob/main/quickstart/quickstart.ipynb). It uses a [small downloadable sample](https://github.com/causals-lab/community/tree/main/quickstart/sample) of 62 nodes and 9 edges selected from this exact release. It checks file hashes, joins edges to nodes, and inspects source-news IDs without requiring private code, a database, or an API key. The selected sample is not representative and does not establish causal effects.
+
 ## Files
 
 The folder `v0.1.0-2026-10-09/` contains: