Help need to make a post

Hi,
I’m new to this wordpress and somebody please help me to learn it well.
these days I’m practice wordpress with free web page. to learn this I’m following axxomovies.org and i need somebody to teach me,

How to make this kind of summary post and when click on “more” button i only need to show rest of the post without this summary post

please be kind to look at axxomovies.org and you can understand what i asking help for.

i hope kind full person will help me soon.

Thanks.