This depends on what is the purpose of learning calligraphy?
If you are a student and want to write well, you should practice hard pen calligraphy first, because hard pen calligraphy is relatively more practical, because nowadays, hard pens are basically used, so there are no opportunities for daily use. Hard-pen calligraphy is also relatively easy. Whether it is the posture of holding the pen or the movement of the pen, it is similar to what you usually use. You only need to learn the structure of the characters and the characteristics of the font, and practice more.
If it is a hobby, it is better to practice soft-pen calligraphy. Although soft-pen calligraphy is rarely used in practice, students practice it less frequently and requires a high degree of self-control. The problem is just the posture of holding the pen, and It's different from usual, it takes some getting used to. In addition, the tip of the brush is relatively soft, so you need to pay attention when handling it. Therefore, it requires a lot of time and energy, which can exercise self-control and temper your temper.