If you really want to learn calligraphy, you'd better learn from your teacher, who graduated from calligraphy. They can teach you more systematically. You may hear others say that someone's elder or friend's handwriting is good, but that's just what they think. The so-called experts look at the doorway, laymen watch the excitement, and those who really write well are those who have profound knowledge or apprentices, have received strict and systematic calligraphy education and have worked hard. In addition, tools are also very important. First of all, if it is paper or paper, beginners can use draft paper. I think the pen should be the most important. If you want to buy a brush, I suggest you find this article and read "Top Ten Brush Brands in China (with Brush Selection and Maintenance Methods)". This paper introduces the selection and maintenance methods of brushes in detail. I hope it helps you.