Can I?

I would like to use this to make a little maybe 2×6 or 3×2 on a static home page. Can some one tell me if I can do that and how to use this code? I am very new to the wordpress stuff and its been very fun. I am very stumped when it comes to this. I am currently using the 2016 theme and here is the site if you need to look and see what I mean. theconservativegamer.com

https://wordpress.org/plugins/display-posts-shortcode/