The Extra Theme comes with a Featured Posts Module which lets you easily display a selection of posts in a prominent slider. To get to one of the posts, your users normally have to click on the post title, quite a small target. Here’s how to make it so that clicking anywhere on the image of the currently featured post takes them to the post.
First, add the following jQuery code to Extra to make the background featured images into links:
You can add this to the theme by pasting it into "Extra > Theme Options > Integration > Add code to the head of your blog", after anything else that is in there.
Though not necessary, you might also want to add the following CSS to turn the mouse pointer into a “hand” icon when hovering over the image, to help your users identify the image as a clickable link.
To add the CSS code to Extra, paste it into Extra's custom CSS box, which you can find from your WordPress admin menu at "Extra > Theme Settings > General > Custom CSS". Paste it after any other code already in there.