Intonation can be called as a tone of speech. This means feelings of speakers can be sensed through their speech. While having a conversation in your daily life, intonation that who you are talking to expresses can help you interpret whether he or she feels unsure, curious or emotional.
These lessons are about intonation.
http://www.youtube.com/watch?v=g2bHdXcszJ4
http://www.youtube.com/watch?v=Qh6kUsJcu3k&feature=fvwrel
http://www.youtube.com/watch?v=k80wiT0t2rc&feature=relmfu
http://www.youtube.com/watch?v=qLGJb63mkyA
http://www.youtube.com/watch?v=_HGxfR7Sziw
Learn how to communicate well.
Intonation and stress are here. Listen to the clip and try to notice and imitate for your improvement.
http://www.rachelsenglish.com/
