There should not be any help needed to do this. It is as simple as opening a profile unless you doing something exceptional. And as you don't state much, I take it that you are doing something simple. Click here to creat a page.
Follow http://www.facebook.com/pages and follow guidelines. But if you are referring to building fans for FB, start by promoting through your website, blog (as icon links), business cards & other offline marketing materials. Also run Facebook ads.
Do you mean help creating a username for a FB fan page? You can create a username at the following link http://www.facebook.com/username/. You will normally need 25 Likes before you can create a username, unless this is the first FB fan page you have created.
its pretty self-explanatory but you're smart to start a facebook page because it is one of the cheapest ways to run ads.