My ideal calligrapher mainly writes about how to realize it.

Don't learn regular script, learn regular script first. It's best to start with the Tang book. You can also start with running script, but running script without regular script foundation will not have much intention, let alone cursive script. You can start with official script and seal script. But one thing is to persevere. If you insist on 100 days, you will make obvious progress. If you persist in 100 days, you will make obvious progress. This is how you practice Chinese characters. I wish you success!