MTR (Mass Transit Railway)
The Mass Transit Railway first began in the 1970s. In the 1960's, the Hong Kong government recognized that there was going to be a need for a mass transit system of some kind due to the growing population that came with the economic growth that Hong Kong was experiencing. A committee was formed and a study made. The proposition that finally came form this would be what would eventually become the MTR of today.
The MTR was designed to quickly carry people throughout Hong Kong, so there are several lines of service. Stations are generally underground in the major parts of the city while the stations will be above ground elsewhere in Hong Kong. Each station has a map of the whole system and will have signs to make it very clear which way you're going. To travel on the MTR, you can purchase a ticket at any station that will allow you to travel to any station throughout Hong Kong, although using an Octopus Card is also a very convenient way to travel on the MTR. The attendants at the MTR stations speak some English as well, so tourists needing directions can ask and will receive assistance.
The Octopus Card is probably the most convenient way to pay for using any means of transportation in Hong Kong. It essentially functions as a debit card, allowing you to add money to it which is automatically deducted from the balance. Additional money can be added to the card at a number of locations, including any 7-Eleven or Circle-K store.