There are many dubbing courses to consider. Here are some recommended resources:

1. Online Tutorial: You can search online for dubbing courses, and there are many free and paid tutorial resources, including video tutorials, online courses and self-study guides.

2. Learning websites: Some online learning websites, such as Coursera, Udemy and Lynda, offer dubbing courses.

3. Dubbing schools: Some specialized dubbing schools or training institutions offer courses, including face-to-face courses and online courses.

4. Personal trainer: You can find an experienced voice actor or coach for one-on-one guidance and feedback.

When choosing a course, it is recommended to consider the following points:

1. Course content and applicable audience: ensure that the course content and objectives meet your needs and level.

2. Teachers and coaches: Look for experienced, qualified teachers or coaches who can provide guidance and feedback.

3. Course fee: Considering the course fee and payment method, is there a refund policy?

4. Course length and schedule: Understand the schedule and content of the course and see if it is in line with your time and study plan.

I hope this information can help you find a suitable dubbing course.