Adding WooCommerce to Customizer

Install woocommerce and follow their instructions basically.

I’m still not clear if WooCommerce is a theme or a plugin. Where do I go to find the install? How do I determine which page of my website the WooCommerce store ends up?

ElectricFeet, thank you, the link you provided did take me to the page with the instructions I needed to install the WooCommerce plugin.