Is there a way out for learning to test the eight characters?

Amateur study is ok, but not as a career.

There are many branches of prediction, such as Eight Characters, Eight Diagrams (Six hexagrams), Wei Zi's Doushu, Daoism, Liu Ren, Feng Shui (Yin and Yang Family) Palmistry, Yimei, Huang Ji and so on. Each subject can be studied for a lifetime, but it is difficult to master. It's even harder without a teacher.