Finally it was done. It wasn't too difficult to understand and implement expandable post in Google Blogger. Now the post functions just like those Wordpress websites. ie the front page will show a teaser of paragraph, if the visitors likes it, can click the "Read More" link to expand the the teaser to a full post for further reading.
Now the frontpage don't have to be a looooong page of many posts, it just shows short teasers, making the page neat and tidy.
Initially the steps were a little bit confusing in that the Google help files do assume you know you know something like where to put those codes. Those were a matter of trial and error to get them into the correct location to insert the codes. Once done, it was a matter of tweaking the display to make it look nice and functional.
There are plenty of help topics too about customizing your blogger templates from the old classic templates to the new layout version. Should be enough info there to get you started to build your own free web site using Google Blogger. There was even a chapter on how to make the site look like a book. Could be useful if you want to make your own web site into hierarchal format rather than a chronologically linear type web site.
Not too bad for a free web site.