If you post an articel to your blog it will displayed on a main page, if you have a long post content, your blog will opened more long time. But it can be tricked with a script to short your post or only abstraction post will dispaled on a main page, and the full post will replaced by "Read More" link. Here's the trick to create "Readmore"
1. You have to Login to blogger, then chose Layouts --> Edit HTML
2. Click on "Expand Widgets Template" checkbox.
3. Find the code below in your HTML Codes. ( the short way to find is by copy the code below then press "Ctrl + F" then paste in the box)
4. If you have found it, put the code below under the above code.
5. Under the code, you will find code like this
you have to put the code below under it.
6. You can change the "Read More" text with other.
7. Save your job.
8. Go to Setting --> Formatting Tab menu
9. At the lower page you will found "text area" box beside text "Post Template"
10. Put the code below to the box
11. Then click Save the setting.
12. If you want to post, put your short post or description above this code , and the next or full post put between and code.