How to learn language?

How to learn language?   

How to learn your first language as a baby?

How to learn a second language as child or adult?

Many different ways to learn language.

• Learn from your parents
• Learn in school with textbook and teacher
• Learn from watching movies or listening to music.
• Learn from communicating with native speaker
• Learn online
• Other ways to learn language?

This is Lily.   She lives in Arizona.  She is learning English.  How is Lily learning English?