diff --git a/README.md b/README.md
index 4559cd6..f04aa9a 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,11 @@
 # scripts-local-tts
 
+## prerequisites
+
+* [Mozilla TTS](https://github.com/mozilla/TTS)
+* [ffmpeg](https://ffmpeg.org/download.html)
+
+## usage
+
+* run speak.sh to generate speech and playback
+* run speak-mp3.sh to convert the .wav to .mp3 and playback