I'm unable to install drush in windows. I have searched a lot for it but unable to understand. I'm new to drupal.
it's pretty simple in fact all you have to do is download and install Acquia Dev Desktop from this link dev desktop and you will have a local dev environnement for drupal with drush included
Here are some guide on how to install Drush on Windows.
Drush on Windows is not recommended, since Drush's test suite is not running there (help wanted).
Acquia Dev Desktop is excellent, and includes Drush. See the terminal icon after setting up a web site.
When creating site aliases for Windows remote machines, pay particular attention to information presented in the
example.aliases.drushrc.phpfile, especially when setting values for
'os', as these are very important when running