Bahya Pranayam: Breathe air out, touch chin to chest, squeeze stomach completely and hold for a while. then release chin, breathe in slowly. http://www.youtube.com/watch?v=CSHRJL9RVt8
Anulom Vilom: Hold your right nasal with thumb, breathe in from left. Now open right nasal and close left nasal with middle and ring finger and breathe out from right nasal. http://www.youtube.com/watch?v=U_k-i1jtG5A
Bhramri: Close ears with thumb, index finger on forehead, and rest three on base of nose touching eyes. Breathe in. And now breathe out through nose while humming like a bee. http://www.youtube.com/watch?v=uClGf2c4kXY