My tips for you are:

1. Content: The main reason why people visit sites is for the visitor content. Go for a mix of different kinds of stuff, for all different kinds of people.
2. Updates: Try to change your homepage and other page layouts as often as posible.
3. Originality: Be unique. Treat your site like your room, put your own ideas into it.
4. Typing Do not type LiKe ThIs oR LiEk DiS. People cannot understand what you are saying!
6. Give credit where credit is due Pretty self-explanatory.
8. Be respectful If people take the time to come to your website and sign your guestbook, the least you can do is do the same.