Before building a website, you must to develop a solid foundation, create a journal that determines your goal (long-term or short-term?) in that way, it is easy for you to analyze who are your target audience, what is your desired structure of your website and how are you going to present online.
What really important on SEO 2013, is about content, how valuable and informative that give user to interact or engage your discussion were reader try to share your articles on social media that give more value on search engine world. We are talking here the quality and your niche.