blog-list.html

<h2>Latest Posts</h2>
<ul>
  {% for post in site.posts %}
    <li>
      <h3>
        <a href="{{ post.url }}">
          {{ post.title }}
        </a>
      </h3>
      <p>
        {{ post.intro }}
      </p>
    </li>
  {% endfor %}
</ul>