wpBeginner website has this to say:

WooCommerce is the most popular WordPress eCommerce plugin, and it comes with tons of extensions. Among all the paid ones, we’ve hand-picked some of the best free WooCommerce plugins.

Source: 20 Best Free WooCommerce Plugins for WordPress

One of my favourite WordPress sites is wpbeginner.com They have an article talks a little bit about WooCommerce called How to Start an Online Store in 2016 (Step by Step).

25 Free & Responsive eCommerce WordPress Themes Powered by WooCommerce 2016

43 Beautiful Free WordPress Blog Themes article at wpbeginner.com.

There is an article at the WP Mayor website call The Beginners Guide To WooCommerce: Product Categories, Tags & Attributes.