Pointers on breast feeding

I tried it last pregnancy & failed.. Can some of the second/third/fourth time moms give me some  pointers like how to store it & for how long. How do you manage time wise with feeding your child & going food shopping for instance, do you switch from bottle to breast or just stick to one. Better to pump or just old fashioned breast method. Any siggestiond will be appreciated- T.Y. 😊