Download standard WooCommerce theme ‘Storefront’ and install it on your WordPress site. You can find a detailed installation guide HERE.
If default WooCommerce pages weren’t created for some reasons, go to WooCommerce → Status → Tools and use the page installer tool:
2. If you set up new pages yourself, or want to change what pages are used for things like cart and checkout, you need to tell WooCommerce which pages to use.
To tell WooCommerce what pages to use for Cart and Checkout, go to WooCommerce → Settings → Checkout.
3. Here is the list of recommended plugins you can use with WooCommerce and this theme:
mailing service (Easy WP SMTP, Pepipost, etc.)
payment gateways: PayPal is set up by default with WooCommerce installation, other solutions you can find HERE
Google Analytics: Google Analytics Dashboard for WP
Facebook Pixel: Pixel Caffeine
SEO: Yoast SEO
Abandoned cart: Abandoned Cart Lite for WooCommerce
site speed optimization: WP Super Cache