> For the complete documentation index, see [llms.txt](https://help.fluorescent.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.fluorescent.co/cornerstone/readme/start-your-free-trial.md).
# Get started
Install your free trial of Cornerstone and start customizing your storefront. When you're ready, purchase your copy and hit publish!
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### Select a theme preset
Choose from 4 presets with ready-made layouts and styles.
All presets include the same features and settings. The demos provide just a few examples — you can customize the theme to create storefronts as unique as your business.
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### Start free trial
Try Cornerstone as long as you like before deciding to purchase. Click **Try theme** on the theme preset listing to add the preset to your store.
In your **Theme library**, click **Customize** to open the theme editor. All your changes will be saved when you buy the theme.
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### Buy and publish theme
When you're ready to publish Cornerstone, go to your theme library and click **Buy** on your theme trial version. You can only [publish themes](https://help.shopify.com/en/manual/online-store/themes/managing-themes/publishing-themes) to your online store that you've purchased.
{% hint style="info" %}
**Licensed themes are purchased exclusively through the Shopify Theme Store.** Unlicensed themes are not supported. If you downloaded the theme from another vendor or plan to use the theme on another store, you need to take immediate action to purchase a legal licensed version.
[Learn more](/cornerstone/readme/start-your-free-trial/theme-licenses.md)
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***
