The Cinque Terre Card
If you are staying in Cinque Terre for any numer of days pick up your Cinque Terre Card. It covers unlimited travel in second class trains between the villages (Levanto to La Spezia). Plus it is required if you want to hike the paths between villages.
The ticket is purchased at the begining of of the hiking path between villages or you can purchase at any rail station in the Cinque Terre.
Plus you are givin a map

Chiesa di San Pietro
View towards Monterosso from Corniglia
Corniglia seen from a passing ferry
Beer and wine bottles in Corniglia