No Author in Blog

In order to add information about author to posts you should open file content.php (go to menu Appearance-> Editor) and paste next code

<div  class="author">
                <p>Author: <?php the_author(); ?></p>
</div> 

after this string
<?php edit_post_link(__('Edit', 'GoGetThemes'), '<span class="edit-link">', '</span>'); ?>

Save changes.