Personal advice is best to learn from a 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 expert watches the doorway, and the layman watches the excitement.
In addition, tools are also very important. First of all, if it is paper, beginners can use draft paper, preferably the kind brought from Mi Zige. I think the pen should be the most important. As for brushes, you should read the article "Top Ten Brush Brands in China (with Selection and Maintenance Methods of Brushes)", which introduces the selection and maintenance methods of brushes in detail. If you don't know how to choose a copybook, you can refer to this article "How to choose a brush copybook for beginners of calligraphy (with the names of 46 classic calligraphy introductory copybooks)", hoping to help you.