How can the products page be changed?

Question

I have my own theme derived from the default RWD theme in 1.9.2.1. However, I want to change the products page. so, it looks like figure one rather than the defualt rwd one with the tabs. However, im not the biggest expert in magento and have no idea how to go about doing, so was wondering if anyone could guide me to what I have to?

figure 1:

Answer 1

File: app/design/frontend/Your-package/Your-Theme/template/catalog/product/view.phtml

your product detail page content coming from above file.

Product images from:

app/design/frontend/Your-package/Your-Theme/template/catalog/product/view/media.phtml

Also you need to check xml file to adjust block placement

app/design/frontend/Your-package/Your-Theme/layout/catalog.xml

Using below code you can add related product on product view page

<?php echo $this->getChildHtml('related_products') ?>