This is the 5155th most frequent Russian word.
научиться
To learn how to do something.
In this sentence, 'научиться' is used to express the desire to learn a new skill, in this case, cooking.
Я хочу научиться готовить.
I want to learn how to cook.
Here, 'научиться' indicates mastering a skill in the past, specifically playing the piano.
Он научился играть на пианино в детстве.
He learned to play the piano in his childhood.
In this example, 'научиться' is used to suggest acquiring the ability to work collaboratively, with an emphasis on the process of learning.