I will be traveling from Guangzhou to Hong Kong and again back from Hong Kong to Guangzhou. I prefer to take a nonstop train. But where do I get information on departure times, price per ticket (if one-way or round-trip is better?). And how do I get to the train stations. If anyone can give me detailed info on:
-Train Locations
-How I get to train stations in HK and Guangzhou
-Time Scehdules
-Price per person
-Visa (if I need one or not?)
-any other info you think I should know.

THANK YOU