How to exclusively breast pump

So I’m 28w1d pregnant with my second baby. My first I wasn’t able to breast feed, I was so overwhelmed and my lactation consultants were not very helpful. With this one I really want to breast feed for at least the first 6 weeks since that’s all the maternity leave I have and then breast pump till he’s at least a year old.

So how to I exclusively breast pump? Like any advice or videos I could watch to show me how to keep my supply up? Best pumps for it? Thank you. (: