1. Self-study: You can learn Japanese by purchasing Japanese textbooks, reference books or online resources. Learning software, mobile phone applications or online courses can be used to assist learning.

2. Join a language school or course: you can sign up for a special Japanese language school or course, and be guided and taught by a professional teacher. This way can provide systematic learning and practice opportunities.

3. Online learning: There are many online platforms offering Japanese learning courses, such as Duolingo, Rosetta Stone and JLPT official website. These platforms provide a variety of learning resources and exercises, and you can learn according to your own progress and needs.

4. Language exchange: You can find Japanese or other Japanese native speakers for language exchange and learn from each other's mother tongue. Language exchange partners can be found through social media, language exchange websites or local language exchange activities.

5. Practice and immersion: If you have the opportunity, you can go to Japan to study, work or travel, and improve your Japanese listening and speaking ability by communicating with Japanese people and living in a Japanese environment.

As for where to learn Japanese, you can consider the following options:

1. Language school: enroll in a local or target language school to learn Japanese.

2. Universities or colleges: Many universities or colleges offer Japanese courses, and you can choose to enroll.

3. Online platform: As mentioned above, you can choose an online learning platform for learning.

4. Community education: Some community education institutions or cultural centers may also offer Japanese courses.

No matter which way and place you choose to study, persistence in practice and accumulation is the key to learning Japanese well. Listening more, speaking more, reading more and writing more, and communicating with Japanese native speakers as much as possible can speed up learning progress and improve language ability.