Breastfeeding help?


Hello ladies, I’m a FTM and want to try exclusively breastfeeding. My LO is 3 days old and my milk finally came in. I want to know how often I should be feeding her, how much, and for how long? Also, when should I start pumping to start a storage and how much should I expect to get from that? If any can give me any resources that’d be great. Thanks!