Great online resource for learning LaTeX dodument management.

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Method 1: .htaccess File with Redirect to Drupal Node

1. Create a Drupal node with links to the directory you want to protect.
2. Setup a Drupal role with access permissons to view the above node, and assign appropriate users.
3. Setup an .htaccess file to check that the referrer is the above Drupal node. 

Method 2: Private Upload Module

This list contains various tips and tricks for working with Drupal. There's nothing very definitive here. It is just a little grab bag of tricks I didn't want to forget again. For more in-depth information see drupal.org.

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