Drupal Module Installation

I've installed the Bitnami MAMP stack successfully. I'm attempting to install the Drupal Module and I have two issues:

1. It asks if I want to install phpMyAdmin. But I know this was installed as part of the MAMP stack. Do I need to install it with the Drupal module as well?

2. I'm instructed to "specify the installation directory of your installed AMP stack". I do (Applications/mampstack-5.4.15-0) and click "next" and get a message saying that "The selected folder is not empty. Please select a different folder." Where do I install the Drupal Module?