Require a User to be logged in to see shop?

I covered this question in today’s WooCommerce Office Hours show, but I’d suggest you look at the Catalog Visibility Options plugin to do this:

https://www.woothemes.com/products/catalog-visibility-options/

After looking around I found the following code that when added to your theme functions file will require login else redirect you to the homepage:

//FORCE PASSWORD FOR ALL PAGES
function wpse_131562_redirect() {
    if (
        ! is_user_logged_in()
        && (is_woocommerce() || is_cart() || is_checkout())
    ) {
        // feel free to customize the following line to suit your needs
        wp_redirect(home_url());
        exit;
    }
}
add_action('template_redirect', 'wpse_131562_redirect');