1. Understand the basics: First, understand the basic knowledge of brush calligraphy, such as strokes, structure and layout. You can learn by reading related books, watching teaching videos or consulting teachers.

2. Choose the right tools: buy a brush and ink suitable for beginners, and some exercise paper. The choice of brush can be decided according to personal preference and writing style. Generally speaking, wool brushes are more suitable for beginners.

3. Learn basic strokes: The basic strokes of brush calligraphy are horizontal, vertical, left-off, left-off and folded. Beginners can gradually master these basic strokes by imitating famous works or following textbooks.

4. Copying famous works: Choosing some famous works suitable for your own level can help beginners better understand the structure and skills of calligraphy. In the process of copying, we should pay attention to the use of famous strokes and font structure, and gradually improve our aesthetic ability and skill level.

5. Keep practicing: It takes a long time to practice and accumulate to learn brush calligraphy. Beginners can arrange some time to practice every day and gradually form good writing habits. At the same time, we should maintain our love and interest in calligraphy and constantly stimulate our creative inspiration.

6. Join a calligraphy class or club: If you have the conditions, you can sign up for a calligraphy class or join the school's calligraphy club to learn and communicate with other calligraphy lovers and make progress together.

In short, junior high school students need to learn brush calligraphy from basic knowledge, tool selection, basic strokes, copying famous works and so on, and gradually improve their skill level through long-term practice and accumulation. At the same time, we should maintain our love and interest in calligraphy and constantly stimulate our creative inspiration.