Sightseeing Bus from Guangzhou Baiyun Aiport

Hi,
Can you please tell me where to get a sightseeing bus from Baiyun Airport as I am travelling on 31st Dec and have a stay over in Baiyun Airport for 12 hours so I am thinking to take a city tour.
Can you please help and suggest which would be the better option (sightseeing or tourist bus) and where to get the buses?
Do the people and both bus and taxi driver speak English? Can they help and guide the tourist? What sort of fare we are looking for 24 hours tour?