I've been on BoS since the ancient times and will provide the same answer I'd expect to hear as a student from back then.
textbook stuff - yes, that's true. but other places (including du) also copy stuff from textbooksirrc their resources are just cambridge txtbook stuff + google docs printed WS's
Currently, as a student who has attended it for yr now, I have only encountered about 2-3 questions that were from textbooks.textbook stuff - yes, that's true. but other places (including du) also copy stuff from textbooks
google docs printed stuff - honestly i'm unsure if it's docs or word but functionality > form