In many train stations in Japanese cities multiple subway and train lines converge at one station, so getting on the correct platform for the right line on the train that will take you to your destination can be quite a feat.
The easiest way to get around most cities is to purchase an IC Card to allow you to enter and exit gates smoothly and efficiently, however an alternative method would be to purchase a one-way ticket.
As long as you have entered through the correct gate, you will see that each train line has a unique symbol, style and colour depending on the operating company, type and line, respectively. Find this symbol and proceed to your platform.
While waiting for train, you will notice that there are markings on the platform to infidicate where to wait, which are on the sides of any given train door, as well as where to get off the train, which is the area in front of a train door. Follow these indicators when queuing for your train. Note that Japanese trains and buses have indicated priority seats, which are designated for the injured, the elderly, and pregnant women and children. You may sit in this area but should give it up for any of these persons.