Breast-feeding

Alright breast-feeding mommies. I am currently 12 weeks pregnant with my fourth child and I would like to breast-feed I didn't breast-feed my older kids because of complications after birth. But I'm hoping all will go well and I can breast-feed. A friend and I were out shopping today looking at all the new breast pumps and everything else that they have out now for nursing moms and it kind of made my head spin. I have absolutely no idea where to start and was wondering if any of you nursing moms out there could help me with this. Like what is the best breast pump to use?? what are the best types of tops for nursing?? How many nursing bra should I have?? What types of bottles should I buy for when I do pump??? Any advice would be greatly appreciated