Here are small notes regarding some MTR stations in Hong Kong. If you are new to the city’s train (MTR) system, you may be interested.
First, if you want to go from Tsim Sha Tsui station to East Tsim Sha Tsui station, or vice versa, you have to buy a new ticket (meaning you have to leave the gate of one station before entering the gate of another), though the two stations are connected by a long subway and a long walk of at least 5-10 minutes.
Second, Hung Hom station, one of the busiest stations, is the only station of the whole MTR system where electronic information is displayed to show which train to depart from which platform, and at what time. The station is busy because it is the starting point and the final stop for two MTR lines (the West Rail Line and the East Rail Line that goes to Lowu or Lok Ma Chau). There are four platforms in the station so look out for the electronic information before going to any of the platforms.
Kowloon Tong is another busy station because here the East Rail Line and the Kwun Tong Line intersects. Previously, to transfer from one line to another, you had to buy a new ticket, just like the situation mentioned above regarding Tsim Sha Tsui station and East Tsim Sha Tsui station. But it is no longer the case. The walk from one line to another is long though, taking approximately five minutes. So be prepared. If you come from Lowu, Kowloon Tong is usually the transit point for going to the city.