Magento is an open source ecommerce web application. Free magento extension offers you the easiest and most convenient access to magento world, providing you a good perspective of up-to-date information and introducing to you our wonderful designs and templates, highly useful extensions, best quality services and valuable membership benefits.Once you pick a magento theme and open its details page click on the Get Extension Key button, agree to the extension license agreement and click again on the same button. The extension key will be visualised. For the current example the extension key is: magento-core/Interface_Frontend_Default_Modern Select and copy it. Open the Magento Admin Area->System->Magento Connect->Magento Connect Manager. Enter again the admin login details and paste the extension key in the Paste extension key to install field. Click on the Install button.