Making a Read More...

1. Open the Layout menu and then select Edit HTML.
2. Give a check mark on ceckbox "expand widget template"
3. Find the following code:

<div class='post-body entry-content'>

4. Replace the code

<p><data:post.body/></p>

with:

<b:if cond='data:blog.pageType == "item"'> <style>.fullpost{display:inline;}</style> <p><data:post.body/></p> <b:else/> <style>.fullpost{display:none;}</style> <p><data:post.body/></p> <a expr:href='data:post.url'>Read More......</a> </b:if>

5. Save the results of editing.
6. Then select Settings menu and select Formatting
7. In the Post Template box enter the following code:

<span class="fullpost"> </span>

8. Then Save.
9. When the post, 2 tab option, "Compose" and "Edit Html", select "Edit HTML", Then automatically the code will appear as follows:

<span class="fullpost"> </span>

10. Put the posts or articles that will be displayed in the main above this code: <span class="fullpost">so that the entire post in place between the code and <span class="fullpost"> </span>
11. Done

ref: trik-tips.blogspot.com