Videocasts on learning what Drupal is and how to use it:
Configuring Your Home Computer to Run Drupal
Even though Drupal powers websites it can also be run on your home computer. You may however, find it easier and quicker to learn how to use Drupal on a webserver that has Linux, Apache, MySQL and PHP already installed and ready to run website software such as Drupal.
Wikipage to come on webservers in India that support Drupal. For now you can see a screencast on how to setup Drupal on a webserver over here: http://revver.com/u/stevejbayer/?sort_by=title&page=1&order=asc (External Link)
Click the following link to see more videos from the Drupal School on blip.tv: http://drupalschool.blip.tv/posts?view=archive&nsfw=dc (External Link)