You go "Socialize" and then when you socialize enough you will level up because of the Influence Points. When you level up there will be more socialize events to do so you will level up faster.
There are 4 Worlds in Drawn to life.
First: Snowy World
Second: Forest World(AKA Jungle World)
Third: Tropical World(Beach World)
Fourth: City World(Life World and End World)
these are the 4 worlds...