There are many ways to achieve this.
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You can use a widget and custom widgetareas or print it with a plugin like widget on pages.
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You can create a page and print the pages content like this. (you can 301 redirect that page to the homepage to disallow users to hit the page directly)
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You can use an option framework and define the content
there. -
If you have multiple different infos to display, you could create
a custom post type.