diff --git a/FreeBSD.md b/FreeBSD.md
index 4f9780c..29db2ef 100644
--- a/FreeBSD.md
+++ b/FreeBSD.md
@@ -1,7 +1,20 @@
-Very experimental. Not finished yet.
+# Set up desktop environment
+
+Ebiten requires X Window system and you need to install a window manager like gnome3. See [the official manual](https://www.freebsd.org/doc/handbook/x11-wm.html). Note that you also need to do `pkg install xorg`.
+
+# Install utilities
+
+At least, Go and git are required.
 
 ```
 $ pkg install go1.8 git
 ```
 
-(TBD)
\ No newline at end of file
+OpenAL is required for Ebiten's audio package. Note that the `openal` package is pretty old and doesn't work. Install `openal-soft` instead.
+
+```
+$ pkg install openal-soft
+```
+
+That's it!
+