edit wp-config.php

edit wp-config.php setting your language

get language package

download language package from
https://github.com/woothemes/woocommerce-language-packs/blob/master/packages/

for italian language
https://github.com/woothemes/woocommerce-language-packs/blob/master/packages/it_IT.zip

add language package

extract language package in
wp-content/languages/plugins/

Reference

• Come tradurre woocommerce in italiano
• Woocommerce italiano: come fare? [Guida]
• WooCommerce//italian translation