Hip-hop music is a kind of music form originated from the African-American community, which includes rap, DJ, MC and other forms of expression. If you want to know the basic knowledge of hip-hop music, you can start from the following aspects:

1. Understand the history and development of hip-hop music, including its origin, schools, representative figures and so on.

2. Learn rap skills, including sense of rhythm, rhyme and pronunciation.

3. Understand the cultural background and social significance of hip-hop music, including political, social and cultural aspects.