Coming from MILANO, GENOVA
Most Intercity trains will stop at Monterosso Station, get out and take the regional train to Vernazza, Cornilia, Manarola and finally Riomaggiore. If you miss that station, you can also get out in La Spezia and take the regional train back to Cinque Terre.
Coming from PISA, FLORENCE OR ROME
Go to La Spezia Centrale and then take the regional train to Riomaggiore, Cornilia, Manarola or Vernazza. Be careful, not all trains will stop in each village. Look at the yellow departure schedule on the wall.
For regional train schedules: TRAIN SCHEDULE
For Intercity: Tren Italia
Except for deliveries and special permission, cars are are not allowed into most of the villages. Monterosso is an exception. You can park at designated parking areas in each town for around 22 Euro/day. Parking is very limited!
If you stay at a hotel ask about parking. Some places do provide it.
The best way for long term parking is in La Spezia at the Train Station Parking Garage.