Page Title, Page Shift and Nav Bar

My address is theprefref.com

1. When on the homepage, the page title does not display, which is good. Except whenever users go to older entries on the next page, the title of the post at the top of the page shows up again as the page title. How do I remove this?

2. When clicking some pages like “groups” or “about us,” the entire content, sidebar and header all shift to the right a few pixels. A minor issue, but kind of annoying. How do I make all the pages stay put?

3. I created an “about us” and “contact” page that show up in the navbar, but when users click them, the “home” tab is highlighted in the navbar instead of the page it is on, even though the page content is correct. This problem did not occur originally, so I don’t know what caused this to happen and I cannot fix it.

Any help is greatly appreciated. Thanks.