Where is the administration interface of AbanteCart?
The admin panel can be accessed by URL like this one:
You should have been prompted for the secret_admin key during the installation.
If you lost or forgot the secret_admin key, you can always find this in your configuration file on your server .../system/config.php
Look for the line: define('ADMIN_PATH', 'secret_admin');
Note: for your convenience admin URL is presented at the end of the installation process.