diff --git a/README.md b/README.md
index 473d08e..8197e82 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,10 @@
 # fast-srt-subtitle
-Make SRT Caption Fast!!!!
+Make SRT Caption Fast!!!! This is a fast and dirty javascript SRT caption tool.
+
+* Put video.mp4 in the same folder.
+* Put transcription (newline separated) to subs.txt in the same folder.
+* Open a web server
+* Run index.html
+* K: Timestamp the next line | L: Timestamp this line's end time | I: Scroll back one line | O: Scroll forward one line | Q: Make SRT File
+
+Enjoy.