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Log in to the PrestaShop back - office by going to your newly-renamed "admin" folder, and start filling your catalog with products, adding carriers and shipping costs, adding manufacturers and suppliers, changing the theme, and generally configuring the many settings to suit your tastes and needs. See the user guide's "First steps with PrestaShop 1.6" chapter for more information: http://doc.prestashop.com/display/PS16/First+steps+with+PrestaShop+1.6.
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