From Lyon Saint Exupery airport: you can easily reach Lyon by taking the express train Rhonexpress to the central Lyon Part-Dieu train station. You should follow the signs "Lyon Express" at the airport. There are trains every 15 minutes and the journey takes 30 minutes. You can find more information about the timetable and prices on the Rhonexpress website.
IMPORTANT INFORMATION - WORKS / SERVICE INTERRUPTION on March 24th: The Rhônexpress line runs from the airport to Vaulx-en-Velin La Soie. Relay buses/metro are set up. See this link for updated information.
How to reach the IP2I (workshop venue): from Part-Dieu, take the tram T1 direction IUT Feyssine or T4 direction La Doua Gaston Berger and get off at the stop Universite Lyon 1.
You should buy tickets before boarding from the automatic TCL machines (on or before the platforms).
For more information, maps and timetables on public transportation in Lyon, you can check the TCL webpage.
From the tram stop Universite Lyon 1, you can walk to the IP2I: follow the tram track in the same direction that the tram goes and turn on the first road on the left. The IP2I (Paul Dirac Building) is down the road (click on the link below to see a map). It is the last building on the left, just after "Maison d'Hôtes".
The "Croix Rousse" meeting room is on the third floor in front of the stairs.