debes aprender a

you must learn to

→ deber
phrase Uncommon #19,280
you must learn to Used before an infinitive: debes aprender a + verb.
SP: Debes aprender a escuchar antes de hablar.
EN: You must learn to listen before speaking.

Bien, debes aprender a escribir, para saber cosas.

Well, you need to learn to write, in order to know things.

— Pixote, la ley del más débil (1980)

Debes aprender a ser cuidadosa.

You need to learn to be careful.

Antes de dar órdenes, debes aprender a obedecer.

Before giving orders, you must learn to obey.

Debes aprender a obedecer instrucciones.

You must learn to obey instructions.

Ellos dicen que eres libre, pero debes aprender a escoger.

They say you are free, but you must learn to choose.

— Fellini, ocho y medio (1963)

Debes aprender a dominar tu carácter.

You must learn to control your temper.