The school will take place at the Dipartimento di Scienze Umane of the Università degli Studi dell'Aquila,
Viale Nizza, 14.
The usual way to reach L'Aquila is to go through Rome.
There are direct buses from Fiumicino airport to L'Aquila and viceversa, see
https://www.gasparionline.it
There are direct buses from Tiburtina bus station (in front of Tiburtina train station) to L'Aquila and viceversa, see
https://www.gasparionline.it
https://www.flixbus.it
https://www.autobus.it/IB3.33.34/arpagt/searchform.aspx
There are trains from Fiumicino airport to Roma Termini train station and viceversa, see
https://www.trenitalia.com
Metro B from Roma Termini to Tiburtina and viceversa.
Moving inside L'Aquila: informations about local buses can be found in
https://www.ama.laquila.it/
Tickets can be bought in shops (typically Tabaccheria) or using the app DropTicket, see the site https://shop.dropticket.it/ too.