This is the 848th most frequent Lithuanian word.
išmokti
"To learn."
Here, 'išmokti' means 'to learn,' indicating the desire to acquire the ability to do something specific.
Noriu išmokti kalbėti lietuviškai.
I want to learn to speak Lithuanian.
This usage ('išmoks', future tense of 'išmokti') represents the expectation of acquiring the ability in the future.
Vaikai greitai išmoks naują žaidimą.
The children will quickly learn the new game.
In this sentence, 'išmoko' (past tense of 'išmokti') shows the action of successfully learning a skill.