Any Advice?!

Hello ladies! I will be 15 weeks on Saturday and lately I have been panicking because I feel like I am not prepared for labor! I have signed up for a birthing class but it hasn't started yet. I know I still have awhile before I will need to really worry about this but I'm a first time mom. I was raised by a single dad so I have no one to ask about it really. Any tips, tricks, advice, or anything is welcome.