Blog Read More

Hello

I am still at the customisation stage of my website. I require my blog posts just to show a snippet of info (paragraph) then "read more". As you can see at present, all information in the post is being displayed.

http://new.cfreshdesign.co.uk/blog/

I'd like it to be like your theme: http://www.mnkystudio.com/imagine/blog/

Thank you..