Optimize Post-Purchase Experience for WooCommerce
I highly recommend the article Tips to Optimize Post-Purchase Experience for WooCommerce from the Official WooCommerce Blog by Cody Landefeld on March 8, 2018.
You had me at Storefront–Benefits of using the official WooCommerce theme
Storefront* is the official open-source theme for WooCommerce powered stores. There are significant benefits to implementing the official theme and making your site’s design work with it. Storefront can improve both form and function with a little patience in working it to suit your design needs.