From Expat Talk, here it is in detail. I’ll make sure I know where each step is supposed to take place, since it’s a little vague, but these are the essentials:
1) Go to Questura
a. Within 8 days of arrival
b. Bring passport
c. Receive Dichiarazione di Presenza (Declaration of Presence)
2) Go to Comune (or is the Anagrafe?)
a. Bring Dichiarazione di Presenza from step 1
b. Bring copy of Circolare 32 – just in case
c. This starts the procedure to establish residency
3) Wait for visit from Vigili (aka police) at your local residence
a. This takes about 2 weeks
b.… Read more