diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,2 +1,25 @@
-# epub2mp3
-This Python script converts an ePub file into an mp3 audiobook using macOS's built-in `say` command for text-to-speech synthesis.
+# ePub to MP3 Converter
+
+This script converts an ePub file into an MP3 audiobook using macOS's built-in `say` command for text-to-speech synthesis and `ffmpeg` to convert AIFF files to MP3. The MP3 files are saved in a directory named after the ePub file, in the same directory where you run the script.
+
+## Requirements
+
+- macOS
+- Python 3.6 or higher
+- `ffmpeg` installed and available in the system's PATH
+
+## Python Dependencies
+
+The Python dependencies are listed in the `requirements.txt` file and can be installed with:
+
+```bash
+pip install -r requirements.txt
+```
+
+## Usage
+
+```bash
+python epub2mp3.py <epub_file>
+```
+
+Replace `<epub_file>` with the name of your ePub file. Each chapter will be output as a separate MP3 file.