When you create a custom menu you can include all the items including published Pages that you want to appear in it and exclude all else.
By default this is the front page of your blog is http://stocf.wordpress.com/
and it's the page that all posts, not pages http://en.support.wordpress.com/post-vs-page/ will display on.
If you want to change that to a static front page then you must create two Pages. http://en.support.wordpress.com/pages/
One will be for the front Page titled whatever you want like Welcome, for example and one will be for your posts to display on, titled for example, Posts.
After you do that then you go to > Settings > Reading and make the designation change and click “save changes”. http://en.support.wordpress.com/pages/front-page/