The job has a very steep 'learning curve'. [=there is a large amount that has to be learned quickly in order to do the job]
He founded a prestigious 'institution of higher learning'. [=a college or university]
They were people of good education and considerable/great 'learning'.
(..) has to run the room, decides if a patient lives or dies. What, am I crazy? You chicken. Don't worry. Turk was there, ''learning by doing''. - Charged. - Clear. The guy was just sleeping, attached to a faulty monitor. I thought we cared for each other. (..)2001 TvShow: Scrubs Title: My First Day Season: 1 Episode 1