Removing Page Title On Landing Page

It’s easy, try this:

In admin menu -> pages, put the mouse hover your homepage, you can see at the bottom of the window an URL like “yoursite.com/wp-admin/post.php?post=NUM&action=edit”

Take that NUM, that’s the ID of your page.

Now go to Apperance -> Theme Options -> Layout, in the “Custom CSS” you need to write this (don’t miss any dot):

.page-id-69 .entry-title {display: none;}

if you want do the same with a post, you need to write this one:

#post-175 .entry-title {display: none;}

Hiding content is bad SEO practice. You can open template-landing-page.php and remove this code:

<header class="entry-header">
	<<?php pinboard_title_tag( 'post' ); ?> class="entry-title"><?php the_title(); ?></<?php pinboard_title_tag( 'post' ); ?>>
</header><!-- .entry-header -->

Do I need to create a child theme in order to keep that from being lost when updating the theme?

of course