Here are some examples:
* "Quiero ir a la escuela para aprender más." (I want to go to school to learn more.)
* "Estoy tomando clases de guitarra para aprender a tocar." (I'm taking guitar lessons to learn how to play.)
* "Este libro es muy útil para aprender sobre historia." (This book is very useful for learning about history.)
In essence, "para aprender" emphasizes the purpose of something - to gain knowledge or skills.