•Download an offline metro map in advance (apps Metro, CityMapper).
•Buy a travel pass for several days (usually more cost-effective).
•Watch the direction (the final station is indicated on the platform).
•Rush hours: 7:30-9:00 and 17:30-19:00 — crowding.
•Google/Apple Maps build routes considering the metro in most cities.
•Stand on the right side of the escalator.