diff --git a/docs/best-practices.md b/docs/best-practices.md
index 90e7253..4e28593 100644
--- a/docs/best-practices.md
+++ b/docs/best-practices.md
@@ -9,7 +9,7 @@ To enable validation - call: `GraphQL\Type\Definition\Config::enableValidation()
 but make sure to restrict it to debug/development mode only.
 
 # Type Registry
-**graphql-php** expects that each type in Schema is presented with single instance. Therefore
+**graphql-php** expects that each type in Schema is presented by single instance. Therefore
 if you define your types as separate PHP classes you need to ensure that each type is referenced only once.
  
 Technically you can create several instances of your type (for example for tests), but `GraphQL\Schema` 
diff --git a/docs/error-handling.md b/docs/error-handling.md
index 4b27656..c400491 100644
--- a/docs/error-handling.md
+++ b/docs/error-handling.md
@@ -126,12 +126,15 @@ try {
         // ...
     ]);
     
-    $result = GraphQL::execute($schema, $query);
+    $body = GraphQL::execute($schema, $query);
+    $status = 200;
 } catch(\Exception $e) {
-    header('Content-Type: application/json', true, 500);
-    echo json_encode([
+    $body = json_encode([
         'message' => 'Unexpected error'
     ]);
-    exit;
+    $status = 500;
 }
+
+header('Content-Type: application/json', true, $status);
+echo json_encode($body);
 ```
diff --git a/docs/getting-started.md b/docs/getting-started.md
index a563247..a261022 100644
--- a/docs/getting-started.md
+++ b/docs/getting-started.md
@@ -15,9 +15,11 @@ add `composer.json` file to your project root folder with following contents:
 ```
 and run `composer install`. 
 
-If you already have composer.json file - simply run: `composer require webonyx/graphql-php`
+If you already have composer.json file - simply run: `composer require webonyx/graphql-php="^0.7"`
 
-If you are upgrading, see [upgrade instructions](https://github.com/webonyx/graphql-php/blob/master/UPGRADE.md)
+# Upgrading
+We try to keep library releases backwards compatible. But when breaking changes are inevitable 
+they are explained in [upgrade instructions](https://github.com/webonyx/graphql-php/blob/master/UPGRADE.md).
 
 # Install Tools (optional)
 While it is possible to communicate with GraphQL API using regular HTTP tools it is way 
@@ -39,7 +41,7 @@ page and install it locally.
 # Hello World
 Let's create type system that will be capable to process following simple query:
 ```
-query { 
+query {
   echo(message: "Hello World")
 }
 ```
@@ -68,7 +70,7 @@ $queryType = new ObjectType([
 ```
 
 (Note: type definition can be expressed in [different styles](type-system/#type-definition-styles), 
-including **inheritance**, **composition** and **inline**. This example uses **inline** style for simplicity)
+but this example uses **inline** style for simplicity)
 
 The interesting piece here is `resolve` option of field definition. It is responsible for retuning 
 value of our field. Values of **scalar** fields will be directly included in response while values of 
diff --git a/docs/type-system/enum-types.md b/docs/type-system/enum-types.md
index 22afa6b..6dd684a 100644
--- a/docs/type-system/enum-types.md
+++ b/docs/type-system/enum-types.md
@@ -28,8 +28,8 @@ $episodeEnum = new EnumType([
 ]);
 ```
 
-This example uses **inline** style for Enum Type definition, but there are also 
-[other styles](/type-system/#type-definition-styles) (using inheritance or composition).
+This example uses **inline** style for Enum Type definition, but you can also use
+[inheritance](/type-system/#type-definition-styles).
 
 # Configuration options
 Enum Type constructor accepts array with following options:
diff --git a/docs/type-system/index.md b/docs/type-system/index.md
index dc0c2bd..6e4c90e 100644
--- a/docs/type-system/index.md
+++ b/docs/type-system/index.md
@@ -79,7 +79,7 @@ class BlogPostType extends ObjectType
 ```
 
 # Type Registry
-Every type must be presented in Schema with single instance (**graphql-php** 
+Every type must be presented in Schema by single instance (**graphql-php** 
 throws when it discovers several instances with the same `name` in schema).
 
 Therefore if you define your type as separate PHP class you must ensure that only one 
diff --git a/docs/type-system/interfaces.md b/docs/type-system/interfaces.md
index 6e7501f..b0a5525 100644
--- a/docs/type-system/interfaces.md
+++ b/docs/type-system/interfaces.md
@@ -31,8 +31,8 @@ $character = new InterfaceType([
     }
 ]);
 ```
-This example uses **inline** style for Interface definition, but there are also 
-[other styles](/type-system/#type-definition-styles) (using inheritance or composition).
+This example uses **inline** style for Interface definition, but you can also use  
+[inheritance](/type-system/#type-definition-styles).
 
 # Configuration options
 Constructor of InterfaceType accepts an array. Below is a full list of allowed options:
diff --git a/docs/type-system/object-types.md b/docs/type-system/object-types.md
index f8f5226..2b30fc6 100644
--- a/docs/type-system/object-types.md
+++ b/docs/type-system/object-types.md
@@ -56,8 +56,8 @@ $blogStory = new ObjectType([
     ]
 ]);
 ```
-This example uses **inline** style for Object Type definitions, but there are also 
-[other styles](/type-system/#type-definition-styles) (using inheritance or composition).
+This example uses **inline** style for Object Type definitions, but you can also use  
+[inheritance](/type-system/#type-definition-styles).
 
 
 # Configuration options
diff --git a/docs/type-system/unions.md b/docs/type-system/unions.md
index a6cb7c7..83e2fdb 100644
--- a/docs/type-system/unions.md
+++ b/docs/type-system/unions.md
@@ -22,8 +22,8 @@ $searchResultType = new UnionType([
 ]);
 ```
 
-This example uses **inline** style for Union definition, but there are also 
-[other styles](/type-system/#type-definition-styles) (using inheritance or composition).
+This example uses **inline** style for Union definition, but you can also use  
+[inheritance](/type-system/#type-definition-styles).
 
 # Configuration options
 Constructor of UnionType accepts an array. Below is a full list of allowed options:
diff --git a/mkdocs.yml b/mkdocs.yml
index 394c8b1..3f068e4 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -15,7 +15,7 @@ pages:
   - Schema: type-system/schema.md
 - Executing Queries: executing-queries.md
 - Handling Errors: error-handling.md
-- Fetching Data: data-fetching.md
-- Best Practices: best-practices.md
+# - Fetching Data: data-fetching.md
+# - Best Practices: best-practices.md
 - Complementary Tools: complementary-tools.md
 theme: readthedocs