Index: wp-content/themes/twentyfourteen/inc/customizer.php
===================================================================
--- wp-content/themes/twentyfourteen/inc/customizer.php	(revision 26134)
+++ wp-content/themes/twentyfourteen/inc/customizer.php	(working copy)
@@ -321,3 +321,26 @@
 	wp_add_inline_style( 'twentyfourteen-style', $css );
 }
 add_action( 'wp_enqueue_scripts', 'twentyfourteen_customizer_styles' );
+
+/**
+ * Adds contextual help to the Themes and Post edit screens.
+ *
+ * @since Twenty Fourteen 1.0
+ *
+ * @param WP_Screen $current_screen An object of the current admin page.
+ * @return void
+ */
+function twentyfourteen_contextual_help( $current_screen ) {
+	if ( 'themes' == $current_screen->id || 'edit-post' == $current_screen->id ) {
+		$current_screen->add_help_tab( array(
+			'id'      => 'twentyfourteen',
+			'title'   => __( 'Title', 'twentyfourteen' ),
+			'content' =>
+				'<ul>' .
+					'<li>' . sprintf( _x( 'Easily feature all posts with the <a href="%1$s">"featured" tag</a> or a tag of your choice; if no posts match the tag, <a href="%2$s">"sticky" posts</a> will be displayed instead.', '1: Link to posts with "featured" tag; 2: Link to sticky posts.', 'twentyfourteen' ), admin_url( '/edit.php?tag=featured' ), admin_url( '/edit.php?show_sticky=1' ) ). '</li>' .
+					'<li>' . sprintf( _x( 'Enhance your design with <a href="%s">Featured Images</a>', 'Link to How-to article.', 'twentyfourteen' ), '[link to how-to article]' ) . '</li>' .
+				'</ul>',
+		) );
+	}
+}
+add_action( 'current_screen', 'twentyfourteen_contextual_help' );