The first thing to learn is music theory, that is, music theory. In fact, it is to learn the knowledge of notation, pitch, rhythm, mode tonality and so on, which is the basis of learning arrangement. Then the landlord needs to learn solfeggio, that is, learn to sing and listen, and have the concept of pitch; Then we need to learn harmony, that is, the progression of chords. We all know that a song can't have only one part, and the progression of this part and other parts is called harmony. Then we need to learn an arranger and host software and master it skillfully, because this is our future arranger workbench; After we can skillfully operate the host software, we can begin to learn the instruments commonly used in popular arrangement, such as drums, bass, piano, guitar and so on. After learning this, you can actually start to try to arrange music. Generally speaking, arranger is a subject that covers a lot of music knowledge. It is suggested that the landlord should learn to arrange music, find a reliable organization with teachers or professional arrangement education, so as to learn more professionally and systematically and avoid the landlord taking many detours. I hope so.