diff --git a/examples/online/index.js b/examples/online/index.js
index 5cdaa6ca..f14474c0 100644
--- a/examples/online/index.js
+++ b/examples/online/index.js
@@ -1,4 +1,8 @@
-// first:
+
+// install redis first:
+// https://redis.io/
+
+// then:
 // $ npm install redis online
 // $ redis-server
 
diff --git a/examples/search/index.js b/examples/search/index.js
index 79f5d9f4..246993ca 100644
--- a/examples/search/index.js
+++ b/examples/search/index.js
@@ -1,4 +1,8 @@
-// first:
+
+// install redis first:
+// https://redis.io/
+
+// then:
 // $ npm install redis
 // $ redis-server
 
diff --git a/examples/session/index.js b/examples/session/index.js
index de41a77d..9bae48b8 100644
--- a/examples/session/index.js
+++ b/examples/session/index.js
@@ -1,4 +1,8 @@
-// first:
+
+// install redis first:
+// https://redis.io/
+
+// then:
 // $ npm install redis
 // $ redis-server