Blog Page Layout

How do I put the ‘Search’, ‘Recent Posts’ and ‘Categories’ windows into the right sidebar of my blog page? At the moment only the blog posts show up. I want a layout like that shown on your demo page.

I have now sorted this problem. But I now cannot change the size of my posts on the blog page. I want mediums size but they keep defaulting to large. Also, title is repeated twice (once below the main title and once in the bottom bar of the post. Can this be changed?

Hi there

Please provide a link to the page and tell me what exactly you want to change on that page