vd = voiced "which the vocal cords vibrate"
vl = voiceless " which they do not"
MANNER: It is how the tongue, lips, jaw, and other speech organs are involved in making a sound and it could be: plosive-stops, fricatives, affricative, nasal, lateral, approximants
POINT: It is where you pronounce the sound, it could be: bilabial, labiodental, dental, alveolar, palato-alveolar, palatal. velar and glottal
If you want to listen the pronunciation of voiced consonant sound, click here: http://www.youtube.com/watch?v=hyKR7cBDpZE