Most language schools will divide the lesson schedules into morning or afternoon classes. This gives you plenty of time to explore the city you are living in, but at some point you might want to start looking for a part-time job.
Your first stop should be to register on GaijinPot Jobs to access hundreds of offers throughout Japan. Be aware that some job agencies will promise to find you work and try to charge you a registration fee. It’s important to remember that nobody can guarantee you will get a job! If they do, then there’s no telling what kind of job they’ll introduce you to. Stick with trusted services like GaijinPot Jobs!