i want to know about subway train & buses and time

Actually i will come to guangzhou on 14th oct.2015 for canton fair, and i want to know about last train that i take from baiyun airport to panyu square & rent of these train . and if there are no train so please inform me about bus that i will take from airport to panyu square & also rent of bus. second thing i want to know there are any place nearby panyu square or canton fair where i will go for refreshment.