diff --git a/book/notes.txt b/book/notes.txt
new file mode 100644
index 0000000..6cca0e0
--- /dev/null
+++ b/book/notes.txt
@@ -0,0 +1,3 @@
+find . -type f -name '*.adoc' | entr ./build
+
+browser-sync --watch --no-open