Magento is becoming one of the best E-commerce store which is gaining popularity by leaps and bounds. With this rate of increasing popularity, many existing and new stores are bound to migrate or start with Magento pretty soon. Although, Magento is quite good but it requires proper knowledge before you indulge yourself into Magento customization. If you want to create a new Magento theme by yourself that’s a different story altogether but if want to leverage the functionality and layout provided by any premium or free Magento theme then you should know how to install the theme soon after successful download.
There are two ways to install a Magento theme
(1) Install via Magento Connect
(2) Install via placing appropriate theme template folders in your Magento Installation.
It entirely depends upon the theme availability and theme quality but if the theme is available in Magento Connect (it has a good collection of free & premium themes) then you can install it very easily without any technical knowledge. Following is a breakdown of how to install a Magento theme via Magento Connect and via inserting new theme template in your existing or new Magento installation.