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A product's shipping price is basically calculated using either of two methods: the total price of the order, or the total weight of the order. This is how most carriers calculate their shipping fees, and this is why you should fill-in the weight setting when creating a product in the catalog, and also why you absolutely must indicate the per-weight and per-price costs for each carrier in the "Carriers" page.
The shipping settings work closely with the local settings of your PrestaShop installation. While in PrestaShop 1.4 some of these settings were also found in the "Shipping" menu, since version 1.5 all local settings have been moved in a new menu, named "Localization". This is where you will be able to edit geographical zones, countries, currencies, etc. Therefore, make sure to have a serious look at the "Localization" menu, which is explained in the next chapter of this guide, "Understanding Local Settings". For instance, in order to create a complete carrier in PrestaShop, you must have clearly defined your geographical zones before; this is done in the "Zones" page under the "Localization" menu.
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