How to make Post Summary by Using "Read More" Blog for Blogspot (Cara membuat Read More Blog)

1.Go to Layout=>Edit html=>click Expand Widget Templates (Don't forget to save by click download full tempate before editing)
Search this code or similar <div class='post-body entry-content>,
Then paste this code under it
<b:if cond='data:blog.pageType == "item"'>
<style>.fullpost{display:inline;}</style>
<p><data:post.body/></p>
<b:else/>
<style>.fullpost{display:none;}</style>

Then, find <data:post.body/>
Paste this code after <data:post.body/>
<a expr:href='data:post.url'>Read More...</a>
</b:if>

Then Save!

Go to Setting=>Formatting=>Post Template
Fill the form with this code:
<div class="fullpost">

</div>

Then Save!

Notes:
There a default text on your New Post like this:
<div class="fullpost">

</div>

You can make Summary text using "Read More" like this:
TEXT TO SHOW
<div class="fullpost">
TEXT HIDDEN
</div>

Source: tutorial-website.blogspot.com