If you do not already have a driving licence from your home country, or if licences from your country are not accepted in Japan, you will have to take extensive driving lessons and tests to obtain a Japanese licence. It involves a huge amount of time and money so be prepared to do these: (1) kari menkyo gakka shiken 仮免学科試験 Learners Permit written test. 50 true/false questions on traffic law, meaning of various road signs, safe driving practices etc in 30minutes. 45+ = pass. After passing (1) and (2), you need to log at least 10hours' practice, over at least 5 days, then you can do (3) and (4):