The first question: it's not difficult. I don't know what your definition of relaxation is. First of all, many machines have replaced labor now, and there is no labor. Secondly, if you are in school, you will understand the principle of making raw materials. After mastering some knowledge, you will understand a lot yourself, and then practice it, and you will get started soon.

The second question: it takes about one month to finish the course quickly, three months to be a little more solid, and nine months to lay a good foundation.