While I knew who Benazir Bhutto was before today, I can't say I was an expert on her. For those looking for more info about Bhutto aside from what all the talking heads are now saying, here are some links to articles about former her which where written at different points in her life  before her assassination today. I found them helpful in learning more about and the situation in Pakistan outside of the context of her death.
Benazir Bhutto to Marry, in a Pact by 2 Families  7/31/87 NY Times
http://query.nytimes.com/gst/fullpage.html?res=9B0DE3D61130F932A05754C0A961948260
Bhutto's Government Dismissed in Pakistan; Emergency Declared; New Elections Pledged 9/7/90 Washington Post: http://www.highbeam.com/doc/1P2-1141156.html
Benazir Bhutto Loses Badly To Longtime Pakistan Rival  2/4/97 NY Times
Devotion and Hope Await Bhutto in Ancestral Home 10/17/07 Washington Post: http://www.washingtonpost.com/wp-dyn/content/article/2007/10/16/AR2007101601841_pf.html