I need help editing a template monster theme we purchased

Hi,
We purchased a wordpress theme for our site. I have been learning wordpress but do not know how to customize it to make it do what I want. I contacted the place where we purchased the theme but apparently what I want is too advanced to get regular help. This is the url to link to the website I am talking about http://www.g3creative.com/g3wp55 . So on the home page there are 8 squares. Each Square links to a blog post. I want each square to link a different portfolio page. Each square will be a different page of the portfolio, so one would be logos, another would be print etc. So when someone clicks on the square for logos I want it to go to the logos portfolio page. How can I do this? I am a beginner in wordpress so I have no idea where to look. Thanks in advance.