I am looking for an SEO oriented wordpress theme for building a portfolio website from free or free premium theme. Please give your suggestions for a responsive theme.. Thanks in advance.
I suggest you to visit themeforest dot net. THere's many good quality wordpress theme. Yes they are premium, but it's worth. You can use search filter to looking for the best theme suit for you need. Read the comments and rating for theme so it make sure you will get the best theme.
I second what Sam said. Themeforest.net will have everything you need from a variety of authors. Make sure it has a good rating, as well as support and that it is still supported. I usually go for 4+ star rating, and I read comments to make sure the support answers questions in a timely fashion.