How to reach Lyon: if you fly to Lyon Exupery airport, you can easily reach Lyon by taking the express tram Rhonexpress to the central Lyon Part-Dieu train station.
How to reach the IPNL (conference venue): take the tram T1 direction IUT Feyssine or T4 direction La Doua Gaston Berger and get off at the stop Universite Lyon 1. From there you can walk to the IPN: follow the tram track and turn on the first road on the left. The IPNL is down the road (click on the link below to see a map).
The "Amphi Dirac" is on the ground floor, the "Salle du Conseil" on the first floor.
You can find more information here.