These methods are not difficult to learn, but they are not easy to learn. Practitioners learn theory for more than two years, and practice it on people for more than half a year before they can really operate, so it is impossible for you to learn by reading books and asking people.
Correctly dredging meridians can improve human health, some sub-health symptoms (insomnia, upset, wanting to get angry for no reason) can be improved, and some modern occupational diseases (shoulder and neck pain, lumbar process) can also be alleviated. But if you want to say that you can cure the disease by this alone, it is still hanging, and it is best to use it as a health care means and auxiliary treatment means.
I hope my answer is helpful to you.