Hi
I love this theme for WordPress, but i have one question about custom layout. I need to add two additional button on home page in boxes. First should reffer to WP post, and second should use external link.
It’s possible to do, and how ? 
Maybe ACF could be used ?
Please give me feedback
You can either use plugin for that or just WordPress Custom Fields in general. This post on WordPress.org will help you to understand how WordPress custom fields work and how to implement them. There are some great examples that will get you started in no time.
You code should be output in index.php file somewhere around
<p class="pinbin-link"><a href="<?php the_permalink() ?>">→</a></p> (arrow button to open post itself)
WP Custom Field was to simple to to that, but with ACF it looks nice.
Thank for support