docs/guide/start-* minor corrections [skip ci]

docs/guide/start-databases.md

@@ -8,10 +8,10 @@ and create a [view](structure-views.md).
 
 Through this tutorial, you will learn how to:
 
-* Configure a DB connection
-* Define an Active Record class
-* Query data using the Active Record class
-* Display data in a view in a paginated fashion
+* configure a DB connection,
+* define an Active Record class,
+* query data using the Active Record class,
+* display data in a view in a paginated fashion.
 
 Note that in order to finish this section, you should have basic knowledge and experience using databases.
 In particular, you should know how to create a database, and how to execute SQL statements using a DB client tool.
@@ -251,7 +251,7 @@ Summary <span id="summary"></span>
 In this section, you learned how to work with a database. You also learned how to fetch and display
 data in pages with the help of [[yii\data\Pagination]] and [[yii\widgets\LinkPager]].
 
-In the next section, you will learn how to use the powerful code generation tool, called [Gii](tool-gii.md),
+In the next section, you will learn how to use the powerful code generation tool, called [Gii](https://github.com/yiisoft/yii2-gii/blob/master/docs/guide/README.md),
 to help you rapidly implement some commonly required features, such as the Create-Read-Update-Delete (CRUD)
 operations for working with the data in a database table. As a matter of fact, the code you have just written can all
 be automatically generated in Yii using the Gii tool.

docs/guide/start-forms.md

@@ -10,9 +10,9 @@ two [views](structure-views.md), you will also create a [model](structure-models
 
 Through this tutorial, you will learn how to:
 
-* Create a [model](structure-models.md) to represent the data entered by a user through a form
-* Declare rules to validate the data entered
-* Build an HTML form in a [view](structure-views.md)
+* create a [model](structure-models.md) to represent the data entered by a user through a form,
+* declare rules to validate the data entered,
+* build an HTML form in a [view](structure-views.md).
 
 
 Creating a Model <span id="creating-model"></span>

docs/guide/start-gii.md

@@ -1,15 +1,15 @@
 Generating Code with Gii
 ========================
 
-This section will describe how to use [Gii](tool-gii.md) to automatically generate code
+This section will describe how to use [Gii](https://github.com/yiisoft/yii2-gii/blob/master/docs/guide/README.md) to automatically generate code
 that implements some common Web site features. Using Gii to auto-generate code is simply a matter of entering the right information per the instructions shown on the Gii Web pages.
 
 Through this tutorial, you will learn how to:
 
-* Enable Gii in your application
-* Use Gii to generate an Active Record class
-* Use Gii to generate the code implementing the CRUD operations for a DB table
-* Customize the code generated by Gii
+* enable Gii in your application,
+* use Gii to generate an Active Record class,
+* use Gii to generate the code implementing the CRUD operations for a DB table,
+* customize the code generated by Gii.
 
 
 Starting Gii <span id="starting-gii"></span>
@@ -127,7 +127,7 @@ or to customize them:
 
 > Info: Gii is designed to be a highly customizable and extensible code generation tool. Using it wisely
   can greatly accelerate your application development speed. For more details, please refer to
-  the [Gii](tool-gii.md) section.
+  the [Gii](https://github.com/yiisoft/yii2-gii/blob/master/docs/guide/README.md) section.
 
 
 Summary <span id="summary"></span>

docs/guide/start-hello.md

@@ -10,7 +10,7 @@ a [view](structure-views.md):
 
 Through this tutorial, you will learn three things:
 
-1. How to create an [action](structure-controllers.md) to respond to requests,
+1. how to create an [action](structure-controllers.md#creating-actions) to respond to requests,
 2. how to create a [view](structure-views.md) to compose the response's content, and
 3. how an application dispatches requests to [actions](structure-controllers.md#creating-actions).
 

docs/guide/start-installation.md

@@ -24,7 +24,7 @@ Installing via Composer <span id="installing-via-composer"></span>
 If you do not already have Composer installed, you may do so by following the instructions at
 [getcomposer.org](https://getcomposer.org/download/). On Linux and Mac OS X, you'll run the following commands:
 
-    curl -sSS https://getcomposer.org/installer | php
+    curl -sS https://getcomposer.org/installer | php
     mv composer.phar /usr/local/bin/composer
 
 On Windows, you'll download and run [Composer-Setup.exe](https://getcomposer.org/Composer-Setup.exe).

docs/guide/start-looking-ahead.md

@@ -3,7 +3,7 @@ Looking Ahead
 
 If you've read through the entire "Getting Started" chapter, you have now created a complete Yii application. In the process, you have learned how to implement some commonly
 needed features, such as getting data from users via an HTML form, fetching data from a database, and
-displaying data in a paginated fashion. You have also learned how to use [Gii](tool-gii.md) to generate
+displaying data in a paginated fashion. You have also learned how to use [Gii](https://github.com/yiisoft/yii2-gii/blob/master/docs/guide/README.md) to generate
 code automatically. Using Gii for code generation turns the bulk of your Web development process into a task as simple as just filling out some forms. 
 
 This section will summarize the Yii resources available to help you be more productive when using the framework.

docs/guide/start-workflow.md

@@ -20,7 +20,7 @@ Functionality <span id="functionality"></span>
 
 The basic application installed contains four pages:
 
-* The homepage, displayed when you access the URL `http://hostname/index.php`,
+* the homepage, displayed when you access the URL `http://hostname/index.php`,
 * the "About" page,
 * the "Contact" page, which displays a contact form that allows end users to contact you via email,
 * and the "Login" page, which displays a login form that can be used to authenticate end users. Try logging in
@@ -30,7 +30,7 @@ These pages share a common header and footer. The header contains a main menu ba
 among different pages.
 
 You should also see a toolbar at the bottom of the browser window.
-This is a useful [debugger tool](tool-debugger.md) provided by Yii to record and display a lot of debugging information, such as log messages, response statuses, the database queries run, and so on.
+This is a useful [debugger tool](https://github.com/yiisoft/yii2-debug/blob/master/docs/guide/README.md) provided by Yii to record and display a lot of debugging information, such as log messages, response statuses, the database queries run, and so on.
 
 Additionally to the web application, there is a console script called `yii`, which is located in the applications base directory.
 This script can be used to run background and maintainance tasks for the application, which are described