Best way to get to Qiaotou dongguan from Guangzhou airport and how much will it cost

a friend told "From GZ you will get bus to Dalang dongguan And then from Dalang to Qiaotou dongguan taxi" is this correct and how much will the taxi from Dalang Dongguan to Qiaotou will cost me ... Or should I "From GZ Railway station to Dongguan Changping station."??