Templates control the look and feel of your website.
This blog is installed with the Cassiopeia template.
You can edit the options by selecting the Working on Your Site, Template Settings link in the menu which is visible when you log in.
For example you can change the site background colour, highlights colour, site title, site description and title font used.
More options are available in the site administrator. You may also install a new template using the extension manager.
Your site has some commonly used modules already preconfigured. These include:
Each of these modules has many options which you can experiment with in the Module Manager in your site Administrator. When you are logged in you can also select the edit icon in the top right corner which will take you to an edit screen for that module. Always be sure to save and close any module you edit.
Joomla! also includes many other modules you can incorporate in your site. As you develop your site you may want to add more modules that you can find at the Joomla Extensions Directory.
Your home page is set to display the content like slideshow, image, text, blog content and so on using Gantry layout manager. The Layout Manager in the Gantry-based theme administration interface provides several options for setting up the layout of the theme's Outlines.
You can change the content by editing the Home Layout settings in the Layout manager in your site template administrator. Go to System -> Site Template Styles -> here you can see the Home layout style, i.e Veno Pro - Home (Template Name - Layout Name).
The layout(Home in this case) consists of several different sections, particles, each with its own set of settings that enable you to customize the behavior and look of your site on the front end.
You can find out all about Layout documentation in Gantry5 Layout Manager Guide.
This is a sample blog posting.
If you log in to the site (the Administrator Login link is on the very bottom of this page) you will be able to edit it and all of the other existing articles. You will also be able to create a new article and make other changes to the site.
As you add and modify articles you will see how your site changes and also how you can customise it in various ways.
Go ahead, you can't break it.