If you want to practice pen writing as soon as possible, is it better to copy the copybook yourself or take a calligraphy class?

Calligraphy class can take some detours, but you can't practice without copying yourself. If you are busy, of course, it is better to combine the two. If the conditions are limited, you can practice by yourself, and you can find a good textbook without funds. There are many online. If you have money and no time, take a calligraphy class first, learn the principles, and practice later when you have time.