Alternative to Morris Mano?l digital design?

I’m reviewing the textbook for my digital Logic class in fall. I understand basic binary and hexadecimal conversions and some basics of digital logic gates and Boolean — but the way these topics are presented in Mano’s 6th edition first chapter, like the method, just has me completely lost. 😞 anyone have alternative textbook suggestions? I’ve got like ≈15 days before class starts