Expandable posts, Read more, post summaries, jump break

Q: Is there any way to post the title only? I would like to show the
title of the post, and then have the post open in another window. Is
this possible? Anybody's help would be greatly appreciated.

A: Yes. We call this feature, a jump break, expandable post or read more. 
First post the whole article in full on a post. Then you add the jump break.

Here is a tutorial:
http://www.google.com/support/blogger/bin/answer.py?answer=154172

If you don't use the new post editor, you can still insert a jump break in Edit HTML mode by adding <!-- more --> where you want to position the jump break. Please note the spaces before and after the word more.