A Cantonese to English Phonetic Glossary. The People's Republic of China has modernized and standardized how Chinese is written in English, but this system isn't in widespread use by Chinese outside mainland China.
Tones are everything in Cantonese.
The capital H doesn't change the sound, it only indicates the low level. The only way to learn to pronounce these tones properly is by listening to and imitating someone who speaks Cantonese. Without the written characters even a native speaker will have difficulty deciphering many of these words by the way they're written in English. Keep in mind too that Wing Chun terms are only descriptive words, that differ with each instructor. Individual words may also be found combined in various ways to make other compound phrases.