To self-study biology in English for junior high school, you can follow these steps:

1. Obtain the textbook: Find an English version of the junior high school biology textbook used in your region or country. This will provide you with the core concepts and terminology.

3. Watch educational videos: YouTube channels like CrashCourse, Khan Academy, and TED-Ed offer biology lessons tailored to a junior high level.

4. Practice with quizzes and exams: Use websites like Cram101 or Google Forms to create practice tests based on the textbook chapters.

6. Keep a journal: Record your observations, experiments, and thoughts to track your progress and understanding of the material.

7. Review regularly: Set aside time each day or week to review what you've learned to reinforce your knowledge.

By following these steps consistently, you can effectively learn junior high biology in English through self-study.