Which books should I buy?

I’m 15 and already in my second year of high school, but since the eight grade I’ve been absolutely in love with learning economics.

I’ve been learning to in 1-2 years participate in the nation economics Olympiad but tbh I feel like YouTube and courses have now become not enough to really have a chance of winning anything.

So, if you guys that are doing a bachelor’s economics degree in English could help me and say which books you have used in your first years I would be insanely grateful.

Thanks 🙏🏻