Call Kowloon-Canton Railway at 011 (+852) 2929 3399 or visit their Web site (see Resources below).
Buy your ticket at the train station you are departing from. If you are leaving from Beijing, go to Beijing West Station. Kowloon's train station is called Hung Hom.
Consider booking a tourist pass for the best prices. A KCR Domestic Travel Pass is less than $4 and is good for unlimited travel on the East and West Rail domestic trains. This is great for sightseeing in Hong Kong. For a trip to the mainland, add a KCR Lo Wu Travel Pass for about $6 more.
Ask your hotel to make arrangements for your train tickets. This is by far the easiest way to book, as train stations can be very busy and lines are usually long. The small fee (the equivalent of $1 or $2) for this service is well worth it.
Get a visa if you plan to take a trip from Hong Kong to China. Visas are not typically required for travel to Hong Kong, but China has different requirements that are strictly enforced by immigration authorities.
Get a Cantonese phrase book. Cantonese is the primary language spoken in Hong Kong. Most people do not speak Mandarin fluently. English is widely understood in the business district and tourist areas.