Usages of joven
Esa profesora joven explica muy bien mi asignatura favorita.
That young teacher explains my favorite subject very well.
En esa clase hay personas jóvenes y adultas que estudian la misma asignatura.
In that class there are young people and adults who study the same subject.
Elon.io is an online learning platform
We have an entire course teaching Spanish grammar and vocabulary.