Displaying only post titles on main page

I’m trying to set up my site so that on the main page, which is the blog, you see the most recent post in its entirety. Then, under that, you see the titles of previous posts which you can then click on…but only the titles…you do not see the full post, or even an excerpt of that post.

Anybody know how to go about doing this? And sorry if its an obvious question; I know little to nothing about CSS.

Thanks.