Magento

I am not a newbie in web development but I haven’t made any eCommerce app yet. I have integrated some payment processors but it’s not a proper ecommerce . Anyone can help?

Hello

The following video representing general Magento functionality for an e-commerce site: http://vimeo.com/5725000
Also catch the link with 100 Magento Videos & Tutorials describing different certain features and additions for Magento.
And this one in addition: http://magentotutorial.net/

Moreover, you can learn good Magento manuals:
http://www.siteground.com/tutorials/magento/
http://www.magentocommerce.com/knowledge-base/entry/magento-for-dev-part-1-introduction-to-magento

Good Luck!

On the official Magento site, they run an initiative called Magento U that provides training on how to use Magento. One of the courses titled “Fundamentals of Magento Development” (40 hours of video) is free at the moment. All you have to do is register here: http://www.magentocommerce.com/t…
If you find it useful, you can consider enrolling for the other paid courses.