getting closer, getting nervous

So I'm a first time mom. I have no idea what I'm doing. We are getting closer and things are getting super real. I want to breast feed but didn't realize how little I know about it until now ie: freezing, pumping, schedules, feeding baby on demand or on schedule, etc. I have no idea if I should wing it like every mom did before all the classes, or should I make time to go to classes? I never realize the things I don't know and the decisions I will have to make until I read things on here! I feel so lost!