How do I change the base URL to use a more user-friendly domain?
You could create a Drupal alias as follows:


In the sites directory, find and rename the example.sites.php file to sites.php
Add the following line

$sites['you.example.com'] = 'name_of_the_directory_where_your_settings.php_is';



In your case, the settings.php file is likely to be inside sites in a directory called reallylongandnotuserfriendly.example.com, which means the line would be:

$site['you.example.com'] = 'reallylongandnotuserfriendly.example.com';


Just be sure that you configure your server to point you.example.com to your base Drupal installation.