diff --git a/INSTALL.md b/INSTALL.md
new file mode 100644
index 0000000..d081692
--- /dev/null
+++ b/INSTALL.md
@@ -0,0 +1,27 @@
+# Install
+
+## Linux
+
+First install Gauche Scheme, on Debian/Ubuntu
+
+    apt-get install gauche
+
+Then build and install compile-scheme
+
+    make
+    make install
+
+## Mac OS
+
+First install Gauche Scheme, on Debian/Ubuntu
+
+    brew install gauche
+
+Then build and install compile-scheme
+
+    make
+    make install
+
+## Windows
+To install on windows first install Gauche Scheme. Then run install.bat as
+administrator.
diff --git a/Makefile b/Makefile
index c94d745..468020a 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,12 @@ all: build
 build: build-gauche
 
 README.md: doc/compile-scheme.1
-	printf "<pre>\n$$(MANWIDTH=80 man -l doc/compile-scheme.1)\n</pre>" > README.md
+	echo "<pre>" > README.md
+	echo "$$(MANWIDTH=80 man -l doc/compile-scheme.1)" >> README.md
+	echo "" > README.md
+	cat README_ADDITIONAL.md >> README.md
+	echo "" > README.md
+	echo "<pre>" >> README.md
 
 build-chibi:
 	echo "#!/bin/sh" > compile-scheme
diff --git a/README_ADDITIONAL.md b/README_ADDITIONAL.md
new file mode 100644
index 0000000..3ce89c9
--- /dev/null
+++ b/README_ADDITIONAL.md
@@ -0,0 +1,39 @@
+# Install
+
+## Linux
+
+First install Gauche Scheme, on Debian/Ubuntu for example
+
+    apt-get install gauche
+
+Then build and install compile-scheme
+
+    make
+    make install
+
+## Mac OS
+
+First install Gauche Scheme, with brew for example
+
+    brew install gauche
+
+Then build and install compile-scheme
+
+    make
+    make install
+
+## Windows
+To install on windows first install Gauche Scheme. Then run install.bat as
+administrator.
+
+# Usage
+
+## Powershell
+
+    $env:COMPILE_SCHEME="gauche" ; compile-scheme -o main main.scm
+    .\main.bat
+
+## Wine cmd
+
+    set COMPILE_SCHEME=gauche
+
diff --git a/README_WINDOWS.md b/README_WINDOWS.md
deleted file mode 100644
index 530826b..0000000
--- a/README_WINDOWS.md
+++ /dev/null
@@ -1,2 +0,0 @@
-To install on windows first install Gauche Scheme. Then run install.bat as
-administrator.