Is a textbook really needed or is the internet enough?

I am a college student. Do I really need to purchase a textbook or is the use of the internet for research enough for subjects at school? (like nutrition subjects, meal management subject, etc.)Is a textbook really needed or is the internet enough?
I tried that before. You'll need a textbook.Is a textbook really needed or is the internet enough?
well you need to know the course material... so you can't just read anything.. it has to be the exact textIs a textbook really needed or is the internet enough?
why don't you just borrow the book from the school library?