WooCommerce is the world’s most popular open-source eCommerce solution.

Noted That:

To install correctly this woocommerce.zip.
Fisrt Download the woocommerce.zip to your computer
Extract/Open woocommerce.zip to Your Computer.
Then, Find readme.txt file inside woocommerce.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 the Tips Below.

Start the Tips:

1. First Download "woocommerce.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 "woocommerce.zip" Downloaded plugin from your computer, Where you downloaded woocommerce.zip According to Step – 1 Above then, click on "Install Now"

6. Now, Click on "Active Plugin"

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

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

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

After Activated Plugin According to Step-6 then,

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

Guide
Minimum Requirements PHP 7.2 or greater is recommended MySQL 5.6 or greater is recommended Visit the WooCommerce server requirements documentation for a detailed list of server requirements. Automatic installation Automatic installation is the easiest option — WordPress will handles the file transfer, and you won’t need to leave your web browser. To do an automatic install of WooCommerce, log in to your WordPress dashboard, navigate to the Plugins menu, and click “Add New.” In the search field type “WooCommerce,” then click “Search Plugins.” Once you’ve found us, you can view details about it such as the point release, rating, and description. Most importantly of course, you can install it by! Click “Install Now,” and WordPress will take it from there. Manual installation Manual installation method requires downloading the WooCommerce plugin and uploading it to your web server via your favorite FTP application. The WordPress codex contains instructions on how to do this here. Updating Automatic updates should work smoothly, but we still recommend you back up your site. If you encounter issues with the shop/category pages after an update, flush the permalinks by going to WordPress > Settings > Permalinks and hitting “Save.” That should return things to normal. Sample data WooCommerce comes with some sample data you can use to see how products look; import sample_products.xml via the WordPress importer. You can also use the core CSV importer or our CSV Import Suite extension to import sample_products.csv

Guide

Minimum Requirements

PHP 7.2 or greater is recommended
MySQL 5.6 or greater is recommended

Visit the WooCommerce server requirements documentation for a detailed list of server requirements.

Automatic installation

Automatic installation is the easiest option — WordPress will handles the file transfer, and you won’t need to leave your web browser. To do an automatic install of WooCommerce, log in to your WordPress dashboard, navigate to the Plugins menu, and click “Add New.”

In the search field type “WooCommerce,” then click “Search Plugins.” Once you’ve found us, you can view details about it such as the point release, rating, and description. Most importantly of course, you can install it by! Click “Install Now,” and WordPress will take it from there.

Manual installation

Manual installation method requires downloading the WooCommerce plugin and uploading it to your web server via your favorite FTP application. The WordPress codex contains instructions on how to do this here.

Updating

Automatic updates should work smoothly, but we still recommend you back up your site.

If you encounter issues with the shop/category pages after an update, flush the permalinks by going to WordPress > Settings > Permalinks and hitting “Save.” That should return things to normal.

Sample data

WooCommerce comes with some sample data you can use to see how products look; import sample_products.xml via the WordPress importer. You can also use the core CSV importer or our CSV Import Suite extension to import sample_products.csv

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Reffered: https://wordpress.org/