The proper syntax for adding a link with HTML is as follows:
Between the <a href=""> and </a> is where your content can be placed.
This includes text and images, or even both.
Using the Editor
If you are using the visual editor on a CMS Block or Page, follow these steps to add a link:
Highlight the text that will contain the link.
Then click on the "link" button, which is highlighted here:
A pop up will appear asking for information.
Add your link next to "Link URL".
Next to Target, you can set the link to either open in the same window when clicked, or have the link open in a different window.
To add a link to an image, you can also highlight the image and follow these same steps.