/sci/ - Science & Math

Bois, idk if this is the thread but
Basically i started reading Concrete Mathematics by Patashnik and I feel like im a fucking degenerate of some sort
Not that i was good at math to begin with, but here im stuck at the first two chapters for a week and i still cant understand it all
Are there any anons who went through the same shit or do i just need to get gud at math and if so whats would /sci/ recommend as a good way to do so(books, courses, etc)