Creating 'After the jump' summaries

Go to http://draft.blogger.com
Create expandable post summaries in your blog posts, so longer posts appear as an intro with
a link to "Read More"
Blog posts can be easily done right from the post editor, without the need for any HTML changes. 

First, decide where in the post you want to create the jump break, and place your cursor
in that position:

Once your mouse cursor is placed at the jump point, simply click the "Insert Jump Break" toolbar icon

Clicking the icon will insert a grey bar at the cursor point, illustrating where in the post your break will appear.

Your  post before "Insert Jump Break" look like this

Your post after "Insert Jump Break" will look like this

Done...
Good Luck!!!!!