Best way to identify trend for beginners

If you want to make money in trading, what principles do you need to understand?

How to solve the conversion between large cycle and small cycle?

Why do some people want to call orders? If he can make money by trading, is he still using it to call orders?

What do you think about this question?What do you think?

How to judge the trend in the early stage. ?

In trading, how to solve the problem of being hit by the market back and forth with stop loss? What is the basis for the solution?