diff --git a/README.md b/README.md
index 419298a..2f9cc53 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,21 @@
-# sam_tags
+# `sam_tags`
 
 [![CI](https://github.com/msto/sam_tags/actions/workflows/python_package.yml/badge.svg?branch=main)](https://github.com/msto/sam_tags/actions/workflows/python_package.yml?query=branch%3Amain)
 [![Python Versions](https://img.shields.io/badge/python-3.11_|_3.12-blue)](https://github.com/msto/sam_tags)
 [![MyPy Checked](http://www.mypy-lang.org/static/mypy_badge.svg)](http://mypy-lang.org/)
 [![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://docs.astral.sh/ruff/)
 
-SAM tags
+[SAM tags](https://samtools.github.io/hts-specs/SAMtags.pdf) in Python.
+
+This package provides 
+1. A class decorator (`sam_tag`) to validate that locally-defined SAM tags adhere to the SAM spec.
+2. Built-in enumerations over the predefined standard tags (`StandardTag`) and the tags used by several popular bioinformatics programs.
+
+## Installation
+
+```console
+$ pip install sam_tags
+```
 
 ## Quickstart