Like the others have said, the design is good but I just don't know what I am getting from the site on first approach. I also don't like how the home page main

Like the others have said, the design is good but I just don't know what I am getting from the site on first approach. I also don't like how the home page main call to action is Sign In, what am I signing into and why should I? I expect the homepage to tell me how you are going to help me, not for me to find out how you can help me?