Many questions

I have recently started a website using this theme and have a huge variety of questions:

1. How do you add more ranks so people register and are only a member and can be promoted by admins or by being active on the forums, etc.???

2. How can I pull recent matches info like on your demo from world championships and such to display on my homepage?

3. How do I remove the wordpress bar that always shows on top of the site?

You can see the problems I’m having on my site: http://www.gamesbarrack.com