Embed a stream of posts/articles from WP into main site (online shop)

Hi there,
I have a webshop for sports nutrition supplements and goods. I want to install a blog in addition so that there is plenty of info for the products, articles from famous athletes, exercise programs, ext. My shop has a very standard two-column theme with a main page in the midle for displaying relevant info (www.zayunaci.com). I don’t want the person reading the article to exit this outlook and enter in the blog if he wants to read the article. I would like him to read a part of the story (short story) directly in the shop and if he gets interested then go to blog.

My questions is: How could I embed a stream of articles from nm blog in the main page divided by categories that dynamically change when there are new posts in my blog.