For putting the shop-system into practice, you best read the last tt-products-manual. If you need a step to step guidance for an exemplary shop, please read the tt-products-tutorial. 

You can get a view over tt_products on The TYPO3 Shop System - What is it?. On page Downloads you'll find all files for installation and extra functions. All news - and therefore the editorial articles - are on the page News List.

Here are all classes, structs, unions and interfaces.

Example: class classtx__ttproducts__article__base

TYPO3 and tt_products basieren auf PHP5