Starting a magazine using WordPress is not that hard. You are going to need great content. But there are plenty of awesome magazine themes for you to take advantage of. I personally prefer relying on frameworks such as Genesis or Thesis to put my site together. Quik for Thesis / Genesis is a beautiful theme that helps you brings your magazine online conveniently. It has a fully responsive design too.
Quik is good looking and easy to customize. It has completely editable templates. Multiple article sliders are offered. The homepage looks pretty elegant and well put together. You also get a landing page and useful shortcodes. 6 color schemes are included. Quik is social media friendly and offers custom widgets to save you time customizing your site.
Quik is one of the best looking Thesis themes around. In order to use it, you are going to have to pick up Genesis or Thesis though.