From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
learn /lˈɜːn/ (learned /lˈɜːnd/ <>, [Br.] learnt /lˈɜːnt/ <>, learned /lˈɜːnd/ <>, [Br.] learnt /lˈɜːnt/ <>) <v>
erlernen, erfahren <v, trans>
"he/she learns" - er/sie erlernt, er/sie erfährt
"I/he/she learned" - ich/er/sie erlernte, ich/er/sie erfuhr
"I/he/she learnt" - ich/er/sie erlernte, ich/er/sie erfuhr
"he/she has/had learned" - er/sie hat/hatte erlernt, er/sie hat/hatte erfahren
"he/she has/had learnt" - er/sie hat/hatte erlernt, er/sie hat/hatte erfahren
"learn more precise details" - Genaueres erfahren
see: learning, learned, learnt