First time breastfeeder!

Hey ladies! So I am on baby number three, but this will be my first time breastfeeding. With my first I was 18 and just did not have the mindset to want to breastfeed. With my son at 25, I was working full time and I didn't want to pump at work or home. I just didn't want the hassle. Now, I'll be 27 when my girl is born, I'm a stay at home mom and I feel ill have all the time in the world to get it down. My parents are my neighbors so I know they'll help with my son so I can focus on my daughter. I just wanted any suggestions or advice on how to breastfeed. I am really nervous about it and figuring if she will be getting enough supply. Thank you all!