Blog page

Hi,

I installed the onetone theeme it works perfectly but I have some problems with the blog page.
I added a separate blog page (which is not the homepage) and I changed the settong of this page to SETTING-READING a static front page-blog page. and I chose that each article on the feed show Summary.
The problem is that this page shows the entire posts one after another, even though I wanted it will show only a preview.
morever, I also chose that the page has a right sidebar, but is not shown.

please let me know how can I manage and design the blog page difrently.

Thanks a lot,
Amitai