I'm sorry to say this, but if this seems complicated, maybe you shouldn't be rooting. Having a rooted phone does require a little bit of knowing what you are doing.
If you still want to root, it's pretty simple, really. Go to settings>Applications>development and make sure "usb debugging" is checked. Then open Unrevoked, plug your phone into your computer, and it'll do the rest for you.
Of course, if you're running windows, you'll have to download hboot drivers. there are tutorials for doing that around the internet, so just google it. If you're using a Mac or Linux, you don't have to worry about this step.