I just see that there is no global thread for the coaches. What i think may be good is that all people speak about the different coaches they tried here and give their opinion about them ;
We could do something like this for example :
Location : south, north of singapore...
Club NAme : XXX
Style of learning
Name of the coach
What you appreciate/disappreciate about your coach (learning and social).
So, we beginner of golf can choose the right one at the beginning.