Here you have several intersting links of phonology in order to improve your knowledge of this science. Just click!
The International Phonetic Association
John Coleman's Phonetics Course
UCLA Phonetics Lab Data: Peter Ladefoged, A Course in Phonetics
Dr. Johanna E. Rubba - University of California
Oxfor University Press - Guide to English Phonetic symbols
Dr. Fajardo-Acosta - Creighton University
English Phonetics and Phonology by Peter Roach
English Language Learning and Teaching by Ted Power