Noted That:

• To install correctly this os-woocommerce-authorizenet-aim.zip .
• Fisrt Download the os-woocommerce-authorizenet-aim.zip to your computer
• Extract/Open os-woocommerce-authorizenet-aim.zip to Your Computer.
• Then, Find readme.txt file inside os-woocommerce-authorizenet-aim.zip and Open readme.txt .
• Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
• Then, Follow the Tips Below.

Start the Tips:

1. First Download " os-woocommerce-authorizenet-aim.zip " Plugin to your Local Computer. (Click Download)

2. Then, Login to your " yourdomain.com/wp-admin " Dashboard.

3. Then, Click on " Plugins " + " Add New " from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse " os-woocommerce-authorizenet-aim.zip "  Downloaded plugin from your computer, Where you downloaded os-woocommerce-authorizenet-aim.zip According to Step – 1 Above then, click on " Install Now"

6. Now, Click on " Active Plugin"

7. Then, See left sidemenu. " Authorize.net for WooCommerce " folder is added on left sidemenu. Now, Click on " Authorize.net for WooCommerce " folder.

   Noted that: If you do not see " Authorize.net for WooCommerce " folder on left sidemenu then, see at left sidemenu " Settings " or " Tools ".

8. Now you configure yourself oR Watch video tutorial below about  Authorize.net for WooCommerce Configurtions and Settings or How to work " Authorize.net for WooCommerce " in your WordPress site.

After Activated Plugin According to Step-6 then,

1. Go to " Plugins " + " Installed Plugin " from Wordpress Admin Panel Leftside Menu.
2. or Direct go to: https://yourdomain/wp-admin/plugins.php
3. Then, Find " Authorize.net for WooCommerce " Activated Plugin from Plugin List.
4. Then, Click on " Settings " from Plugin that is Authorize.net for WooCommerce
5. Now, Edit/Add/Config the setting and Click on " Save Changes " button,

Minimum requirements:

WordPress 4.3+
WooCommerce 2.6+
PHP 5.5x
MySQL 5.2x+

Installation from within backend:

1. In plugin manager, click “Add New”
2. Search for “os-woocommerce-authorizenet-aim”
3. Click “install”
4. Activate the plugin once it is installed

FTP upload installation method:

1. Upload the os-woocommerce-authorizenet-aim folder to the /wp-content/plugins/ directory using your FTP client
2. Activate the plugin through the ‘Plugins’ menu

Zip upload installation method (make sure uploads up to 5MB are allowed for your hosting):

1. Login to your WordPress site administrator panel and head over the ‘Plugins’ menu
2. Click ‘Add New’
3. Choose the ‘Upload’ option
4. Click Choose file ( Browse ) and select the os-woocommerce-authorizenet-aim.*.zip file.
5. Click Install Now button.
6. Once it is complete, activate the plugin.