I am doing a magento customization site ,I need to add some additional information about the product to cart page, checkout page . I am new to magento please help how can i do this.
I tried this code in app\design\frontend\base\default\template\checkout\cart\item\default.phtml
$_product =$_item->getProductId();
$_helper = $this->helper('catalog/output');
$_product = $this->getProduct()
?>
<?php if($_additional = $this->getAdditionalData()): ?>
<div class="availability in-stock"><b>Compatible with : </b><div class="button2" style="color:#77C25A;"><?php echo $_additional['computer_manufacturers']['value']; echo " | "; echo $_additional['model_type']['value']; echo " | "; echo $_additional['model_version']['value'] ; ?> </div></div>
<?php endif;?>