woocommerce-change-add-to-view.php

add_filter( 'woocommerce_loop_add_to_cart_link', 'replacing_add_to_cart_button', 10, 2 );
function replacing_add_to_cart_button( $button, $product  ) {
    $button_text = __("View Product", "woocommerce");
    $button = '<a class="button" href="' . $product->get_permalink() . '">' . $button_text . '</a>';

    return $button;
}

woocommerce-direct-checkout.php

function bbloomer_redirect_checkout_add_cart( $url ) {
    $url = get_permalink( get_option( 'woocommerce_checkout_page_id' ) ); 
    return $url;
}
 
add_filter( 'woocommerce_add_to_cart_redirect', 'bbloomer_redirect_checkout_add_cart' );

woocommerce-only-add-one-to-cart.php

// before addto cart, only allow 1 item in a cart
add_filter( 'woocommerce_add_to_cart_validation', 'woo_custom_add_to_cart_before' );
 
function woo_custom_add_to_cart_before( $cart_item_data ) {
 
    global $woocommerce;
    $woocommerce->cart->empty_cart();
 
    // Do nothing with the data and return
    return true;
}

woocommerce-translate-texts.php

function my_text_strings( $translated_text, $text, $domain ) {
 switch ( $translated_text ) {
 case 'Detalles de facturación' :
         $translated_text = __( '¡Inscríbete ahora! Completa tu información', 'woocommerce' );
 break;
         case '¡Oferta!' :
         $translated_text = __( 'Preventa', 'woocommerce' );
 break;
         case 'Realizar el pedido' :
         $translated_text = __( 'Inscribirse', 'woocommerce' );
 break;
           case 'View Product' :
         $translated_text = __( 'Inscribirse', 'woocommerce' );
 break;
                case 'Tu pedido' :
         $translated_text = __( 'Resumen', 'woocommerce' );
 break;
                case '¿Ya eres cliente?' :
         $translated_text = __( '¿Ya eres alumno?', 'woocommerce' );
 break;
         case 'Pagar' :
 $translated_text = __( 'Inscribirse', 'woocommerce' );
 break;
 case 'producto' :
 $translated_text = __( 'curso', 'woocommerce' );
 break;
         case 'Producto' :
 $translated_text = __( 'Curso', 'woocommerce' );
 break;
         case 'Detalles del pedido' :
 $translated_text = __( 'Detalles de la inscripción', 'woocommerce' );
 break;
         case 'Total' :
 $translated_text = __( 'Inversión', 'woocommerce' );
 break;
  case 'productos' :
 $translated_text = __( 'cursos', 'woocommerce' );
 break;
 case 'Productos relacionados' :
 $translated_text = __( 'Quizás te interesen estos otros cursos', 'woocommerce' );
 break;
case 'Pedido recibido' :
 $translated_text = __( 'Inscripción recibida', 'woocommerce' );
 break;
         case 'Checkout' :
 $translated_text = __( 'Confirmación', 'woocommerce' );
 break;
         case 'Número de pedido:' :
 $translated_text = __( '# de confirmación:', 'woocommerce' );
 break;
         
         
         
 }
 return $translated_text;
}
add_filter( 'gettext', 'my_text_strings', 20, 3 );