Write in small letters, usually with wolf hair or double-stranded brush, not wool, because it is too soft to control. Ordinary calligraphy and stationery stores have special pens to choose from. At the beginning, as long as the hardness is moderate, there is no need to unilaterally pursue advanced and expensive.
The paper needs to be boiled. It's not bad to practice with fringed paper. If it is a beginner's stage, back issues of newspapers are good practice materials.