. >>> the world's catholics have a new leader, cardinal jorge bergolio. today's tracie potts has a look at what his first day as pope will entail. >> as the much-anticipated white smoke poured from the sistine chapel, thousands rushed to st. peter's square to see the newly elected pope. >> i waited here all day this was amazing. >> cardinal jorge bergolio of argentina, now, st. francis, winning the hearts of the people by asking for their prayers. >> it was a sign of hugh millity and holiness. a simple jesuit who rode the bus, cooked his own meals and gave up the archbishop palace for a modest apartment. habits that he intends to keep. >> as the last bus pulls up, guess who gets off the bus. pope francis. i guess he told the driver, i will goi with the guys on the bus. >> he was not wearing the red silk instead in a simple white cassock. >> today, pope francis visits the sanctuary in rome and will set brat mass in the sistine chapel. >> so now, the vatican starts preparing for tuesday's installation. early estimates were that 200,000, 300,000 people could

. >> from this day forward, argentina's cardinal, jorge bergolio, will be known as pope francis.he first noneuropean pope in more than 1,000 years and the first jesuit pope. the new leader is already hard at work. >> reporter: pope francis is known to be a humble man. the son of an italian railroad worker, he's the first latin american person to be elected pope and the first jesuit. [ cheering and applause ] >> reporter: pope francis greeted tens of thousands of faithful from the balcony above st. peter's square wednesday night. he is the first pope from the americas in church history, something he reference the in his first statements. [ speaking foreign language ] >> reporter: he said it seems my brother cardinals have come almost to the ends of the earth to find a new pope. the 76-year-old thanked the crowd for the warm welcome and asked them to bless him. he then blessed the crowd. he also said a prayer for his predecessor. the retired pope, benedict the 16th. the ringing bells, the crowd was thrilled. [ cheering and applause ] [ crowd noise ] >> very, very exciting! words ca