Top Navigation Bar Showing Links – Want to Remove

Hi, I am a newbie and just created my blog, miracleofpower.com

I have created a static page as ‘Home’ and made another as ‘Blog’. I am seeing the links in two places – one in the top navigation bar and another is below the header making duplicates. I want to remove the top links tabs. I tried to follow the advice at WP site but unable to find which template I have to edit. Shall be grateful if someone can guide. Arun Chattopadhyay