My b2evolution Version: 2.x

As a newbie, I need help. I have been writting HTML for many years, but know nothing about pHp & CSS. I have installed b2evo and have created several new blogs. The question, I'm running several sub-domains and would like to run seperate blogs on the seperate subs. b2evo is loaded in the root domain. I want the blogs on sub-domain #1 (www.mbsmiley70.org) to be accessed directly thru that domain name, with no visible links back to the root domain. The same for each of the additional sub-domains. Additionally, I don't want the users of one domain to see the posts or blogs of the other domains. What do I need to adjust to do this.

Mike