The back-end of your website known as the Joomla administrator area, is where you can make changes to the content and menu items that show on the front-end of your website. The Joomla administrator area is also where you can install and configure Joomla extensions, modules and plug-ins.
1) Open your web browser.
2) Type the web address: www.yourdomainhere.com/administrator.
Note: Change ''yourdomain' to your domain. 
3) In the Username textbox, type your username.
4) In the Password textbox, type your password.
5) Click the Login button.
