nauczyć się podstaw czegoś in inglese:

Just because you were assigned to me for a few days to learn the ropes... doesn't give you the right to come in here and start asking

You'll be fine once you learn the ropes.

This class is intense! They don't even give you a chance to learn the ropes before they throw an exam at you.

By the time he was 34, he had learnt the ropes of the jewellery trade./ When Tim took over as the team manager he needed a few months to learn the ropes.