diff --git a/includes/functions.php b/includes/functions.php
index a1ae62b9..8ba06746 100644
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -242,7 +242,7 @@ function wpt_column_add_extra_items( $keyword, $column_settings, $columns_array,
          * To add Any Items for [Select multiple inner items]
          * Remember: It's only for Admin Product Table Edit. and data will debend on Save Only
          */
-        $items = apply_filters( 'wpto_inside_thecked_item_arr', $items, $keyword, $column_settings, $columns_array );
+        $items = apply_filters( 'wpto_inside_checked_item_arr', $items, $keyword, $column_settings, $columns_array );
         if( is_array( $items ) && count( $items ) > 0 ){
             
             //array_merge(array_flip($items),$columns_array)
diff --git a/includes/row_manager.php b/includes/row_manager.php
index cdcbfff1..1e49e536 100644
--- a/includes/row_manager.php
+++ b/includes/row_manager.php
@@ -1,7 +1,7 @@
 <?php
 
 $table_row_loc = WPT_BASE_DIR . 'includes/table_row.php';
-$table_row_loc = apply_filters( 'wpo_table_row_loc', $table_row_loc, $column_settings,$table_column_keywords, $args, $table_ID, $product );
+$table_row_loc = apply_filters( 'wpto_table_row_loc', $table_row_loc, $column_settings,$table_column_keywords, $args, $table_ID, $product );
 if( file_exists( $table_row_loc ) ){
     include $table_row_loc;
 }
diff --git a/includes/shortcode.php b/includes/shortcode.php
index ba97c8bb..a5ae3cf5 100644
--- a/includes/shortcode.php
+++ b/includes/shortcode.php
@@ -425,7 +425,7 @@ function wpt_shortcode_generator( $atts = false ) {
      * Do Detect Page number, When Table will be display.
      * 
      */
-    $page_number = apply_filters( 'wpt_page_number', $page_number, $table_ID, $args, $column_settings, $enabled_column_array, $column_array );
+    $page_number = apply_filters( 'wpto_page_number', $page_number, $table_ID, $args, $column_settings, $enabled_column_array, $column_array );
     $args['paged'] =( get_query_var( 'paged' ) ) ? get_query_var( 'paged' ) : $page_number;
     
     $args = array_merge( $args, $basics_args );
diff --git a/readme.md b/readme.md
index 7cc0b1c8..fc56486e 100644
--- a/readme.md
+++ b/readme.md
@@ -1,7 +1,82 @@
+![Woo Product Table](https://raw.githubusercontent.com/codersaiful/woo-product-table/master/assets/images/wpt-logo.png)
 
+# Woo Product Table - A WooCommerce Product Table Plugin
+Woo Product Table has Tiny Shortcode. Easy to use and No need programming knowledge to use. Easily able to handle by Graphical User Interface. Just like following:
+```[Product_Table id='123']```
 
-## Available Filter Hook List
+## Features
+- Withing a minute, User able to make a table and using shortcode, able to display anywhere
+- Most popular and Fastest
+- Developer Friendly - Available lots of Filter and Action Hook
+- Support all theme and plugin
+- Displaying product list as table within a minute.
+- So many lots of features [Read More](https://www.wcproducttable.xyz/)
+
+### Available Filter Hook List
 https://docs.google.com/spreadsheets/d/1RwnzuupIYC-ao2R3_P3hZU__R-8nA3p7o2XoWWntNig/edit?usp=sharing
 
-## Available Action Hook List
-https://docs.google.com/spreadsheets/d/1aK2__VKTZbPk8HMTfck4RjdFq6Z7nV7yyZOnZ0hUkK4/edit?usp=sharing
\ No newline at end of file
+### Available Action Hook List
+https://docs.google.com/spreadsheets/d/1aK2__VKTZbPk8HMTfck4RjdFq6Z7nV7yyZOnZ0hUkK4/edit?usp=sharing
+
+# Making a sample Addons
+Here I will show, how a user can make a addon for **Woo Product Table** using our Hook. As example, I will show, how to add new column in our table.
+
+### Using hooks
+There are variety of ways to add your custom code to manipulate code by hooks:
+- To a custom child theme’s functions.php file.
+- Using a plugin such as [Code Snippets](https://wordpress.org/plugins/code-snippets/)
+
+### Using action hooks
+To execute your own code, you hook in by using the action hook ```do_action('action_name');```. Here is where to place your code:
+```
+add_action( 'action_name', 'your_function_name' );
+
+function your_function_name() {
+// Your code
+}
+```
+## Start Procedure of adding new Collumn
+First we have to our custom column in default column array using ```wpto_default_column_arr``` filter.
+```
+<?php
+if( !function_exists( 'new_shortcode_column' ) ){
+   function new_shortcode_column( $column_array ) {
+       $column_array['new_shortcode'] = 'New Shortcode';
+       return $column_array;
+   }
+}
+add_filter( 'wpto_default_column_arr', 'new_shortcode_column' );
+```
+We have added our new shortcode column to default column array. Now we need a file where we can add the content for that custom shortcode.
+
+Below we have used ```wpto_template_loc_item_ . $keyword``` filter.
+```
+<?php
+if( !function_exists( 'temp_file_for_new_shortcode' ) ){
+    function temp_file_for_new_shortcode( $file ){
+        //$file = __DIR__ . '/../file/my_shortcode.php';
+        $file = $your_file_location;
+        return $file;
+    }
+}
+add_filter( 'wpto_template_loc_item_new_shortcode', 'temp_file_for_new_shortcode', 10 );
+```
+
+Now we need to add a input field for get the custom shortcode from user. here we have used ```wpto_column_setting_form_ . $keyword``` action to add the input field inside column area in column tab.
+```
+<?php
+function input_for_new_shortcode($column_settings){
+    $text = isset( $column_settings['new_shortcode']['text'] ) ? $column_settings['new_shortcode']['text'] : false;
+    ?>
+<input class="ua_input" name="column_settings[new_shortcode]" value="<?php echo esc_attr( $text ); ?>">
+<?php 
+}
+add_action( 'wpto_column_setting_form_new_shortcode', 'input_for_new_shortcode' );
+```
+Now we have to show the shortcode content using our custom file. Here we create a file ```my_shortcode.php``` with following code.
+```
+<?php
+$my_shortcode = isset( $settings['text'] ) ? $settings['text'] : '';
+ 
+echo do_shortcode( $settings['text'] );
+```
\ No newline at end of file