We'll start with consonants. You must refer to your handout giving the phonetic transcription symbols, as these symbols are not reproduced on this web page. Voiced consonants involve a vibration of the vocal cords that you can feel when you place your hand on your throat.
Unvoiced consonants involve no vibration of the vocal cords.
The stop consonants are distinguished by what part of your mouth you use to block the air. If voiced, the bilabial stop is the intial consonant of bill . If unvoiced, it's the intial consonant of pill . Further back in the mouth, we pronounce alveolar stops . The voiced alveolar stop is the initial consonant of dill .