diff --git a/README.md b/README.md
index 82d24c1..dbab8f7 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,13 @@ BNetzA replaces the file in place across editions, so the URL is
 stable; the fetcher detects updates via the HTTP `Last-Modified`
 header.
 
+## See also
+
+[**50ohm.de**](https://50ohm.de/) is an excellent companion learning
+resource for the same exam — community-maintained explanations,
+worked examples, and study material that complement the bare
+question catalog the decks built here are based on.
+
 ## Requirements
 
 Python 3.11+, standard library only. No third-party dependencies.