Samba is defined as a Brazilian musical genre derived from African and European roots. It is worldwide recognized as a symbol of Brazil and Carnival. The samba derives a kind of dance of roots African arisen in Brazil and taken as the national pace for excellence. Considered one of the main cultural events popular Brazilian, samba became a symbol of national identity.
Now that Rio de Janeiro won the right host the 2016 Olympiad, the whole world will definitely learn more about Samba.
For starters, you can learn about it with these videos
YouTube - Quenia's DANCE TODAY: SAMBA! : WorldDanceNewYork.com : DVDs Shipped Worldwide!
http://www.youtube.com/watch?v=EsaKME97CmQ