diff --git a/README.md b/README.md
new file mode 100644
index 0000000..a085dfd
--- /dev/null
+++ b/README.md
@@ -0,0 +1,20 @@
+# TVStud Serial Mail
+
+Reads data from a mapping file and prepares Thunderbird drafts for serial mailing.
+
+### How to use:
+
+First, download the mapping file from `http://mapping.rfwu.de` and place it in the same folder as `serialmail.py`.
+
+To run, simply run `python serialmail.py --sheet SHEET_NAME`.
+For example:
+```bash
+$ python serialmail.py --sheet Psycho --full-area-name Psychologie
+```
+
+You might want to add `--dry-run` first to check what emails are prepared.
+
+For a list of all possible arguments, run
+```bash
+$ python serialmail.py --help
+```
diff --git a/serialmail.py b/serialmail.py
index fbbc7fa..e21b850 100644
--- a/serialmail.py
+++ b/serialmail.py
@@ -46,7 +46,7 @@ def construct_mails(
 
 
 def main():
-    parser = argparse.ArgumentParser("TVStud Bonn Mail")
+    parser = argparse.ArgumentParser("TVStud Bonn Serial Mail")
     parser.add_argument(
         "--data-file",
         type=Path,