Displaying Standard Products on a Page & adding them to cart in salesforce?

Hi Manpreet,

First Query for products to show on vf page,Modify the Product2 Standard Object according to your Requirement like create a richtext area field to insert image of product ,create price field to store the price of the Product2.

For selection of the Product you need to create wrapper class,Within Wrapper wrap the items that you want to know when user select the particular product like wrap Product2 object,Quantity Field,Price  in wrapper.Then add the products selected in the list of Wrapper Class type.