Starting B.A. Economics with no economics background—what books and resources should I rely on?

I’m starting B.A. Economics this year and have no economics background. I’m looking for the books or sources from where i can study and i can blindly rely on.
Which books should I buy for Microeconomics, Mathematical Tools, and Statistical Tools?
Should I rely on textbooks, YouTube, online courses, or lecture notes?
Which resources helped you the most when starting from scratch?
I’d appreciate any recommendations. Thanks!