Add WooCommerce to Your Website
To add the WooCommerce plugin begins in the same way as any other plugin. Log into your admin page and scroll down to Plugin>Add New
This will open to the Add Plugins Page: At the right corner is the search tool. As you type the letters Woo, the page will automatically open to the list of WooCommerce plugins.
Select this one
Click on install. Once activated, you can click on the activated button, or return to your installed plugin page, and activate the WooCommerce plugin there.