i have done my 12th with 73% and now am planning to go to NZ.could u tell me what course or diploma would be best for me.and tell fees also

i have done my 12th with maths and economics in arts in 2011.and now m going to NZ in october.so tell me which diploma will be best for me and its requirements.moreover,tell me there fees structure also,its very urgent.i hope you will reply soon.....thankss