One of the Boys (2008)

One of the Boys (2008) trivia questions

1. In 2008, through which record label was this Katy Perry album released?
2. Which 2007 release came out before Katy Perry's 2008 album?
3. Before 2008, under what real-name billing did Perry release her 2001 debut?
4. Which lead single from the 2008 album hit No. 1 on the Billboard Hot 100?
5. Which 2008 single from the album reached No. 3 in the United States?
6. Which 2008 tour did Katy Perry join to help promote the album?
7. What was the name of Katy Perry's first solo world tour for the album?
8. About how many copies had the album sold worldwide, per Wikipedia?