Learning music arrangement requires a certain amount of time and patience. Here are some ways to help you get started quickly:

1. Learn music theory, including scales, chords (harmony), etc. This is the basis for learning to arrange music, which can be learned through online tutorials or books.

2. Learn to use arrangement software, such as CUBASE or Fruit. You need a computer with decent performance, which costs about 8,000 yuan. The CPU is fast enough, the memory is large enough, and the hard disk is large enough. Then you need to learn to install and use various audio sources.

3. Practice writing melody. After watching the arrangement tutorial, write a melody on the host software based on the knowledge you learned in the previous few minutes.