You need some solution for how to process orders in your online shop. New extensions are available—"shop_manager" by Semyon Vyskubov. This extension is for tt_products because it is necessary to manage orders from the backend side.
Delivery modules are already present in the extension "tt_products". SSL security certificates become necessary when you start to pay using credit cards.
Payments processing using the tt_products extension can be realized with the extra extension "paymentlib_paypal".
In the next chapter, we will describe the possibilities of administrating shop content using the administrative interface in TYPO3 BE.