diff --git a/README.md b/README.md
index 97ff2c7..e920019 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,12 @@
 # eolas
 
-This repository is my technical knowledge management system,
-[zettelkasten](https://en.wikipedia.org/wiki/Zettelkasten) or "second-brain",
-comprising notes from my study of software engineering and computer science.
+This repository is a Zettelkasten comprising notes from my study of software
+engineering and computer science.
 
-## Related projects
+It is a constituent part of my knowledge management system comprising
+[eolas-api](https://forgejo.systemsobscure.net/thomasabishop/eolas-api),
+[eolas-db](https://forgejo.systemsobscure.net/thomasabishop/eolas-db), and
+[eolas-app](https://forgejo.systemsobscure.net/thomasabishop/eolas-app).
 
-TBC
+This repository contains the raw Markdown files (see `/zk`) that these other
+application use to create the database, API and frontend of the Eolas project.