Step 1: Login to the WordPress admin dashboard
Step 2: Next, look the the left side navigation bar and click on Plugins, then on Add New.
Step 3: Now that you are on the new plugin installation page, you should now see a search box towards the top. In this search box, enter WooCommerce, then click on the button labeled Search Plugins. You will then be taken to the search results screen.
Step 4: Within your search results, you should see the WooCommerce plugin as the first result. To begin the installation, click Install Plugin. WordPress will then handle the full download of the plugin, as well as the installation.
Step 5: Once the installation has completed, be sure to click the activation link to activate your new WooCommerce plugin.
Step 6: Now that WooCommerce is installed, you will need to complete one last step. After you have activated WooCommerce, you will be sent to the main plugin page. There will be a notice to the top of this page prompting to install the default WooCommerce pages. Click the button that says Install WooCommerce Pages to complete this installation.