This is the 60th most frequent Korean word.
데
The Korean word "데" means "place," "point," or "situation," and is often used contextually to indicate a location, context, or aspect.
In this sentence, '데' is used to refer to 'place' or 'aspect', especially as an abstract concept, related to suitability for a particular action.
이 책은 공부하기에 좋은 데가 많아요.
This book has many good aspects for studying.
'데' here indicates a specific place or location, showing a material or physical interpretation.
갈 데가 있어서 먼저 일어날게요.
I have somewhere to go, so I will leave first.
In this usage, '데' suggests an abstract context or situation, indicating appropriateness or relevance for an action.