Home Page posting?

I'm very frustrated right now as I can't seem to figure out how to post any blogs/stories directly onto my home page I've only been able to createa widget column on the homepage and stories onto my catgories but not directly onto my HOME site. Also I can't seem to figure out to ge tthe LogIn/Sign Up buttom on the home page either? I'm attempting for a social theme where they can log-in to create forums, add friends, blog etc. Any help with this would be awesome.