Custom posts loop like blog page

Hello, i’d like to create page displaying my custom post in the same style as normal posts. In the tutorials I’ve found they are editing loop in copy (page-new.php) of index.php but in your code we can see something like this <?php fruitful_get_content_with_custom_sidebar('blogright'); ?>. I created new sidebar and called it ‘custompage’ instead of ‘blogright’ but i dont know how to add loop and add sidebar to single custom post. I know that loop is in the functions.php but i dont know how can i create new. Please help me.