Help with google/youtube account problem!!!!! PLZ?

Ok so i have tried account recovery with my main yahoo account, i originally had a vulgar name and decided to make a new account. So basically i deleted the youtube account that was connected to the yahoo. Now on my main i try to switch the email to the yahoo from the hotmail, it says an account has the email or somthing. How do i get my yahoo to be the main email of my main account. SORRY FOR EXPLAINING SO BAD!!!!!