diff --git a/best_practices/creating-the-project.rst b/best_practices/creating-the-project.rst
index b180e2d3de6..a180eef9fd2 100644
--- a/best_practices/creating-the-project.rst
+++ b/best_practices/creating-the-project.rst
@@ -94,7 +94,7 @@ ProductBundle, InvoiceBundle, etc.
 
 But a bundle is *meant* to be something that can be reused as a stand-alone
 piece of software. If UserBundle cannot be used *"as is"* in other Symfony
-apps, then it shouldn't be its own bundle. Moreover InvoiceBundle depends on
+apps, then it shouldn't be its own bundle. Moreover, if InvoiceBundle depends on
 ProductBundle, then there's no advantage to having two separate bundles.
 
 .. best-practice::
diff --git a/book/controller.rst b/book/controller.rst
index 62f5a1ba303..7ec7bd4ae3a 100644
--- a/book/controller.rst
+++ b/book/controller.rst
@@ -5,7 +5,7 @@ Controller
 ==========
 
 A controller is a PHP callable you create that takes information from the
-HTTP request and constructs and returns an HTTP response (as a Symfony
+HTTP request and creates and returns an HTTP response (as a Symfony
 ``Response`` object). The response could be an HTML page, an XML document,
 a serialized JSON array, an image, a redirect, a 404 error or anything else
 you can dream up. The controller contains whatever arbitrary logic *your
@@ -34,7 +34,7 @@ common examples:
   for the homepage of the site.
 
 * *Controller B* reads the ``slug`` parameter from the request to load a
-  blog entry from the database and create a ``Response`` object displaying
+  blog entry from the database and creates a ``Response`` object displaying
   that blog. If the ``slug`` can't be found in the database, it creates and
   returns a ``Response`` object with a 404 status code.
 
@@ -201,7 +201,7 @@ to the controller:
 
         return $collection;
 
-Now, you can go to ``/hello/ryan`` (e.g. ``http://localhost:8000/app_dev.php/hello/ryan``
+Now, you can go to ``/hello/ryan`` (e.g. ``http://localhost:8000/hello/ryan``
 if you're using the :doc:`built-in web server </cookbook/web_server/built_in>`)
 and Symfony will execute the ``HelloController::indexAction()`` controller
 and pass in ``ryan`` for the ``$name`` variable. Creating a "page" means
@@ -490,7 +490,9 @@ You can also put templates in deeper sub-directories. Just try to avoid creating
 unnecessarily deep structures::
 
     // renders app/Resources/views/hello/greetings/index.html.twig
-    return $this->render('hello/greetings/index.html.twig', array('name' => $name));
+    return $this->render('hello/greetings/index.html.twig', array(
+        'name' => $name
+    ));
 
 The Symfony templating engine is explained in great detail in the
 :doc:`Templating </book/templating>` chapter.
@@ -525,7 +527,7 @@ via the ``get()`` method. Here are several common services you might need::
 
     $mailer = $this->get('mailer');
 
-What other services exist? You can list all services, use the ``debug:container``
+What other services exist? To list all services, use the ``debug:container``
 console command:
 
 .. code-block:: bash
diff --git a/cookbook/form/data_transformers.rst b/cookbook/form/data_transformers.rst
index bfa8b472895..d3a368f9ea7 100644
--- a/cookbook/form/data_transformers.rst
+++ b/cookbook/form/data_transformers.rst
@@ -130,7 +130,7 @@ by calling ``addModelTransformer`` (or ``addViewTransformer`` - see
 
             // the "em" is an option that you pass when creating your form. Check out
             // the 3rd argument to createForm in the next code block to see how this
-            // is passed to the form (also see setDefaultOptions).
+            // is passed to the form (see also configureOptions).
             $entityManager = $options['em'];
             $transformer = new IssueToNumberTransformer($entityManager);
 
diff --git a/cookbook/security/entity_provider.rst b/cookbook/security/entity_provider.rst
index 081ca361f1b..bca65414289 100644
--- a/cookbook/security/entity_provider.rst
+++ b/cookbook/security/entity_provider.rst
@@ -435,9 +435,9 @@ interface requires three methods: ``loadUserByUsername($username)``,
                 ->setParameter('username', $username)
                 ->setParameter('email', $username)
                 ->getQuery()
-                ->getOneOrNullResult()
+                ->getOneOrNullResult();
 
-            if ($user) {
+            if (null === $user) {
                 $message = sprintf(
                     'Unable to find an active admin AppBundle:User object identified by "%s".',
                     $username
diff --git a/cookbook/serializer.rst b/cookbook/serializer.rst
index 75910f61e31..b84bf2e6b79 100644
--- a/cookbook/serializer.rst
+++ b/cookbook/serializer.rst
@@ -74,16 +74,16 @@ Here is an example on how to load the
 
     .. code-block:: yaml
 
-       # app/config/config.yml
-       services:
-          get_set_method_normalizer:
-             class: Symfony\Component\Serializer\Normalizer\GetSetMethodNormalizer
-             tags:
-                - { name: serializer.normalizer }
+        # app/config/services.yml
+        services:
+            get_set_method_normalizer:
+            class: Symfony\Component\Serializer\Normalizer\GetSetMethodNormalizer
+                tags:
+                    - { name: serializer.normalizer }
 
     .. code-block:: xml
 
-        <!-- app/config/config.xml -->
+        <!-- app/config/services.xml -->
         <services>
             <service id="get_set_method_normalizer" class="Symfony\Component\Serializer\Normalizer\GetSetMethodNormalizer">
                 <tag name="serializer.normalizer" />
@@ -92,7 +92,7 @@ Here is an example on how to load the
 
     .. code-block:: php
 
-        // app/config/config.php
+        // app/config/services.php
         use Symfony\Component\DependencyInjection\Definition;
 
         $definition = new Definition(