Adding View Counts to All Posts in WordPress Dashboard

Hi folks. So I recently wrote some posts using WordPress for a website that had a nice feature – in the All Posts menu in the WordPress Dashboard, they had a column which showed the number of views each page had.

Is there any way to enable this for my own site, because I can’t find it? The Screen Options pulldown at the top of the screen doesn’t have a check box for Views. I Googled it and saw some ancient plugins, and one post that said to add CODE-3 to the functions.php, but that must have been for an old version of WordPress because it immediately crashed my whole site when I added it in (I have no idea what I’m doing…).

I currently use Twenty Eleven theme with a few bits of customisation in the php files but I don’t do wordpress coding, just small edits I find in tutorials to make small tweaks.

Thanks for any advice.