The front page manager allows you to choose what content will show up on the home page of your Joomla site. On the upper menu bar, click on content. In the drop-down menu, select Front Page Manager. This will open a window that lists all your front page articles. To publish an article, simply click the red x next to the item. In the next column, use the up and down arrows to set the order in which the articles will appear. To add previously created articles to the front page, Click on Content in the upper menu bar, then select Article Manager. You will open a window that lists all your articles. Any article with a check in the Front Page column will show up in the front page manager. If you wish to add an article to the front page, simply click the red x in the Front Page column, and as always make sure you save your work. Return to the front page manager, where the new article will now be listed.
You can now view your front page and see that the new article has been added. That is it. You now know how to change your front page content in Joomla.