Magento CE (Community Edition) User guide will show you how to use Magento. For Magento newbie, it’s better to read the user guide carefully, and the most important we need to remember some very important point, now WebDux.com will show you some points.
1. Magento encryption key
The encryption key protects sensitive data such as passwords and personally identifiable customer information. The encryption key is stored on the server at: /app/etc/local.xml
When Magento generates your encryption key, write it down and keep it in a safe place. If you ever move your data to another Magento CE site, you will need the encryption key to recover the data.
2. Reinstalling Magento
If you want to repeat the installation of Magento Community Edition on the same server, it is not necessary to download the files again.
To reinstall Magento:
1. On the server, delete the file: app/etc/local.xml
2. Delete any files and directories found in: var/
3. With your browser, navigate to your Magento directory. For example: http://www.yourDomain.com/magento-directory