How to install WooCommerce plugin
In your WordPress admin panel, go to the menu Plugins -> Add new.
2. Type WooCommerce in the Search field and click Search Plugins.
3. On the next page, click Install Now under the plugin you want to install.
4. In the “Are you sure you want to install this plugin?” window that’s going to pop up, click “Ok”.
5. Once it is installed, click Activate Plugin.