If you are a nursing student, you will find all information on the tests to be done before your arrival, and who to contact at the link:
Incoming Erasmus Students - Intra EU | University of Palermo (“Before arriving checklist”).

You must promptly register, as soon as you arrive in Palermo, at the student secretariat (Viale delle Scienze, Ed. 3) which will assign you a student number. All the necessary information is present at the link:
Incoming Erasmus Students - Intra EU | University of Palermo (“At your arriving”).

After receiving your enrollment number, you can contact your meta referent by sending an email at: anna.aiello@unipa.it.

Other useful information can be found in Guidelines for incoming Erasmus students.