What should I prepare for birth?

My EDD is in October and I feel like I have yet to prepare anything! My gynae says that I can let her know about my birth plan during the next check up at 28 weeks. Is there anything else I should prepare for except for the necessities? Should I sign up for a class for hypnobreathing, birthing class to mentally prep my mind? Please share! #advicepls #firstbaby