I had a look at your site. You have some cool content on there, but two things about the design can be improved, I think.
1 - Whenever you navigate from the front page to a sub page, you'll always have to a. look around and discover how you can return, and b. cannot navigate to other pages from a subpage, because there is no menu. Your visitors will always have to return to the main page to navigate to other sections.
2 - The main page design itself, I think, doesn't honor the quality work you do. I think that design, fonts and font effects on the start page should be replaced by something more clean and stylish, but it's not possible for me to put my finger on it exactly, or make substantial recommendations. Maybe you cold steal a couple of design principles form the apple webpages, which I find clean, stylish and easy to use, while probably also relatively easy to produce.
Cheers,
Frank