Photos on home page posts

How can I make a picture show up for each post on my home page? Right now the posts are listed by date and show the title of the post but not a picture. You have to click on the post then it opens the post and you can see the picture. I want a picture to show up on the list so the posts are more “clickable” and appealing. Thanks for any help ??

The page I need help with: [log in to see the link]