Once you've created your first Joomla site, you next step will be to edit/install and customize your template. Some excellent material to help you do so is below.
1 Template Installation Troubleshooting Manual There are many errors that can occur during template installation for your Joomla! site. The aim of this document is to identify common issues discovered in Joomla! 1.5 installation problems, and provide solutions. Sometimes the solution is easy, sometimes its not. Note: If after checking all these solutions, you cannot find a solution, check out Joomla.org. If you purchased a commercial template, contact the developer(s). Note: Before you get into this troubleshooting manual and start trying to figure out why your template will not work, be sure that the template is indeed a Joomla! template. Joomla! templates are specific to Joomla! 1. Error: “Direct Access to this location is not allowed.” Or: “Warning! - Failed to move file” Cause: The cause of this could be attributed to multiple sources. One possibility is that Joomla! does not have writable access to key directories. Another possibility is that the Joomla! has been been installed with incorrect ownership rights. Solutions: 1.1: The first thing you should do is login to your File Transfer Protocol Client (FTP), and check the following directories are set to writable (777). /joomlaroot/templates and: /joomlaroot/tmp Another way to fix this problem is to provide your FTP login details to Joomla!'s global configuration. If Joomla! has the correct file ownership permissions (see below) the directory write errors can be fixed automatically. 1.2: If you are still having problems then the problem is probably an ownership issue. You will need to go to the apache user groups and chown Joomla!'s user group to have ownership of the website directories. You can do this by running this command in apache: sudo chown -R www-data:www-data joomlaid - *Where 'joomlaid' is the Joomla! root directory* Note: If you are unfamiliar with Apache ownership settings I strongly advise you contact your hosting company and ask them to make these changes for you. 2. Error: “Your Extension appears to be written for an older version of Joomla!. You must enable the System - Legacy Plugin in the Plugin Manager if you wish to complete this task.” Cause: As the error says, the extension, (in your case, the template) was written for an older version of Joomla! specifically, Joomla! 1.0.X.