First of all, you should choose the font you want to practice and choose the copybook that suits you, so as to set a good goal. Generally speaking, it is easier to practice regular script, so Yan Zhenqing, Liu Gongquan and Ou Yangxun are our main targets. Then, if you want to teach yourself, you can buy copybooks from the Internet, and then find video exercises from the Internet. For example, Taiwan Province Chen Zhongjian's calligraphy video is very suitable for beginners, mainly because of his detailed system and careful recording. Everyone feels comfortable watching the video, suitable for novices. You can find the video from it, which is quite complete.
Of course, if time and money permit, I think I can sign up for a calligraphy class. It is best for the teacher to teach it himself.
You can't just practice calligraphy, you also need to know some little knowledge of calligraphy. What font, what brush is suitable for writing and what ink is better are all beginners need to know.
As for what is fast, it is impossible. Other masters have been writing for many years. Why can I come to you once? You can't learn calligraphy quickly. The only way is to study hard day after day and practice hard year after year.
Because calligraphy is not only writing words, but also cultivating the mind, and now calligraphy is no longer the way of our daily communication. This is an art that needs us to learn and understand slowly all our lives. Calm down and learn from him, and you will succeed!