They provided :

15 new, highly-customizable templates from our design team, split into four families: Simple, Picture Window, Awesome Inc, and Watermark
One-, two-, and three-column layouts for each template, with complete control over the size and arrangement of the columns
Hundreds of background images and patterns from iStockphoto, the leading microstock image marketplace

Read this info on www.blogger.com/templates

this is the steps :

Go to your Dashboard – Layout – Page Elements

And you will open the new window : Configure Blog Posts

You need uncheck which one do you want to remove from your blog and checking the boxes for showing in the blogpost. Save.

This is my post after i uncheck several item :

Note: Sometime you need to wait a longer time until the posts or comments appear.

Check Expand Widget Template

Now, find this code : <div class=’post-body’> or <div class=’post-body entry-content’>

Copy paste this code under the code above :

<b:if cond='data:blog.pageType == "item"'>

<style>.fullpost{display:inline;}</style>

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

<b:else/>

<style>.fullpost{display:none;}</style>

Look under that code you will find  : <p><data:post.body/></p>

And paste this code below :
<a expr:href='data:post.url'>Read Full Entry</a>

</b:if>

click Save Template.

Than go to Setting, Formatting, and find Post Template area,

paste this code below :

<div class="fullpost">

</div>

Done, click Save Setting.

Now if you want to post, write in edit html. The text before <div class=”fullpost”> will be appears in your post, and the text after that code will be appear if you click the readmore link.
You must write like this :

Click Publish Post.

#navbar-iframe {

  height: 0px;  

  visibility: hidden;   

  display: none;

  }

But, If you want to show up the Blogger Bar, you must delete that code and the bar will appears again.