diff --git a/README.md b/README.md
index be51b2f..5a7922e 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,22 @@
 # todolist-syntax
-Vim syntax file for todo lists.
+
+Vim syntax file for todo lists (**\*.td**).
+
+# Installation
+
+```shell
+mkdir -p ~/.vim/syntax
+wget -O ~/.vim/syntax/todolist.vim https://raw.githubusercontent.com/gechandesu/todolist-syntax/main/todolist.vim
+echo 'autocmd BufRead,BufNewFile *.td set filetype=todolist' >> ~/.vim/filetype.vim
+```
+
+# Syntax
+
+```
+- Uncompleted task (blue)
++ Completed task (green)
+x Rejected task (red)
+# Comment (cyan)
+TODO mark
+Plain text
+```