WooCommerce

An Introduction to Theming WooCommerce for WordPress

Storefront. The Official WooCommerce Theme

https://docs.woocommerce.com/wc-apidocs/
http://websitetutorials.grafix.gr/e-shop/woocommerce/
https://docs.woocommerce.com/wc-apidocs/hook-docs.html

Errors

BackOffice -> WooCommerce -> System Status:

Writebale
/wp-content/uploads/wc-logs/

GeoIP

GeoLite Legacy Downloadable Databases

/wp-content/uploads/GeoIP.dat