diff --git a/1-front-controller.md b/1-front-controller.md
index 6b1f446..6f8af0f 100644
--- a/1-front-controller.md
+++ b/1-front-controller.md
@@ -34,7 +34,7 @@ echo 'Hello World!';
 
 Now let's see if everything is set up correctly. Open up a console and navigate into your projects `public` folder. In there type `php -S localhost:8000` and press enter. This will start the built-in webserver and you can access your page in a browser with `http://localhost:8000`. You should now see the hello world message.
 
-If there is an error, go back and try to fix it. If you only see a blank page, you will likely have to enable error reporting.
+If there is an error, go back and try to fix it. If you only see a blank page, check the console window where the server is running for errors.
 
 Now would be a good time to commit your progress. If you are not already using git, set up a repository now. This is not a git tutorial so I won't go over the details. But using version control should be a habit, even if it is just for a tutorial project like this.
 
diff --git a/5-router.md b/5-router.md
index e8ce35c..1af5383 100644
--- a/5-router.md
+++ b/5-router.md
@@ -1,4 +1,4 @@
-[<< previous](4-http.md)
+[<< previous](4-http.md) | [next >>](6-controllers.md)
 
 ### Router
 
@@ -72,6 +72,6 @@ $routeDefinitionCallback = function (\FastRoute\RouteCollector $r) {
 $dispatcher = \FastRoute\simpleDispatcher($routeDefinitionCallback);
 ```
 
+This is already an improvement, but now all the handler code is in the `Routers.php` file. This is not optimal, so let's fix that in the next part.
 
-
-to be continued...
\ No newline at end of file
+[<< previous](4-http.md) | [next >>](6-controllers.md)
\ No newline at end of file
diff --git a/6-controllers.md b/6-controllers.md
new file mode 100644
index 0000000..33a6eb3
--- /dev/null
+++ b/6-controllers.md
@@ -0,0 +1,5 @@
+[<< previous](5-router.md)
+
+### Controllers
+
+to be continued...
\ No newline at end of file
diff --git a/README.md b/README.md
index 5f019d0..065f936 100644
--- a/README.md
+++ b/README.md
@@ -15,4 +15,5 @@ So let's get started right away with the [first part](1-front-controller.md).
 3. [Error Handler](3-error-handler.md)
 4. [HTTP](4-http.md)
 5. [Router](5-router.md)
-6. Dependency Injector
\ No newline at end of file
+6. [Controllers](6-controllers.md)
+7. Dependency Injector
\ No newline at end of file