How to develope a module in magento?

Hello Irfan

There is full demo to create a module of hello world

http://myarticleandnews.blogspot.in/2013/10/create-new-module-helloworld-in-magento.html

i think you can understand it..... best of luck

You can learn magento module creation process from following URLs:

• http://www.magentocommerce.com/knowledge-base/entry/magento-for-dev-part-5-magento-models-and-orm-basics
• http://www.magentocommerce.com/wiki/5_-_modules_and_development/0_-_module_development_in_magento/custom_module_with_custom_database_table
• http://coding.smashingmagazine.com/2012/03/01/basics-creating-magento-module/

You can  use this tutorial as a start, its a simple one but give you basics you need :

Create New Module HelloWorld in Magento

I also found a project for a company the generates magento module online, you just choose settings you need and generate it:

Magento Module Creator