diff --git a/README.md b/README.md
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 # Notes on OpenPGP
 
-Documentation about OpenPGP for application developers.
+The "Notes on OpenPGP" project aims to produce accessible documentation for various aspects of the OpenPGP ecosystem.
 
-Sphinx-generated output document:
-- html: https://openpgp.codeberg.page/test/
-- epub: https://openpgp.codeberg.page/test/OpenPGPforapplicationdevelopers.epub
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+## OpenPGP for application developers
+
+A book for application developers who want to integrate OpenPGP functionality into their software.
+
+This book serves a standalone introduction to the concepts of OpenPGP. It also introduces readers to the [OpenPGP RFC](https://datatracker.ietf.org/doc/draft-ietf-openpgp-crypto-refresh/).
+
+Current draft version: [html](https://openpgp.codeberg.page/test/), [epub](https://openpgp.codeberg.page/test/OpenPGPforapplicationdevelopers.epub).
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