Tortuga is a flexible and adventurous WordPress theme for your magazine, personal blog, or any news-related website. It supports a grid layout for posts, an optional sidebar, and a beautiful featured-post slider. You can check Tortuga theme Demo.
It is a 2 (two) column premium wordpress.com theme and if you want to build your site using Tortua theme the css styles i shared here will be helpful for you. You can use my shared code and ask question in the comments section.