how do i store and use breastmilk that is good for 1 whole day

Hi mummies, how do I store breastmilk? Should it be on a separate storage per feed (e.g. 6 feedings should have 6 separate storage)? Then when i thaw in refrigirator for 24hrs to be used on the next day, is it still ok to consume those within the day? Please advise. Thank you