How do I do this? Where to start?

I already have a blog set up via wordpress with hostIcan as my host.

I am needing to set up another site. Completely independent of the first one.

What is the best way to do this? Is there any documentation of how to’s you know of to help me get started??

I know I will need to buy the new domain name but will I be able to have them both through the same host, and wordpress??

Thanks.

Boo