Some good info on learning Chinese.
Here is the site below.
Learn Chinese Online
Romanized spelling system of Chinese - Pinyin
The phonological system of the modern standard language in Chinese, Putonghua or Guoyu, can be represented by letters. Of all the letters of English alphabet, 25 letters are used for Pinyin. Letter 'v' is not used, while letter '?' is added to represent the vowel sound 'yu'.
Consonant letters
There are 20 consonant letters use in Putonghua. Letter 'V' is not used. Three consonants are represented by combinations of two letters - 'zh', 'ch' and 'sh':
b p m f d t n l g k h j q x z c s zh ch sh r y w
Learn Chinese Online
Romanized spelling system of Chinese - Pinyin
The phonological system of the modern standard language in Chinese, Putonghua or Guoyu, can be represented by letters. Of all the letters of English alphabet, 25 letters are used for Pinyin. Letter 'v' is not used, while letter '?' is added to represent the vowel sound 'yu'.
Consonant letters
There are 20 consonant letters use in Putonghua. Letter 'V' is not used. Three consonants are represented by combinations of two letters - 'zh', 'ch' and 'sh':
b p m f d t n l g k h j q x z c s zh ch sh r y w