Blog Posts and Images

Sorry guys but I’m bit of a newbie with WP. When I make a post to the blog and I insert an image and then go back to the blog home page, all I see is the topic of my post. It’s not until I click the link and enter the post do I see the image.

How do I get one image in the main “blog” index and then have two or three more photos displayed when you actually go into the post.

Thanks!