This is the 193rd most frequent Hungarian word.
jobban
"Jobban" means "better" in English.
In this sentence, 'jobban' is used to indicate a stronger preference for one option compared to another.
Én jobban szeretem a teát, mint a kávét.
I prefer tea over coffee.
Here, 'jobban' modifies the verb 'tanulj' to denote an improvement or greater degree of effort.
Tanulj egy kicsit jobban, és sikerülni fog a vizsga!
Study a little harder, and you will pass the exam!
In this case, 'jobban' expresses an improved state of being or condition.