Come through Gate B of CERN Meyrin site. Gate B is about 200 meters west from the Globe of Innovation. There will be a volunteer at Gate B to hand you your access card and to give you directions to the Main Auditorium, which is about 5 minutes walk from Gate B.
Tram#18 (Direction to CERN) is highly recommended for those coming from Geneva side.
Bus#68 stops at CERN for those coming from Saint-Genis side.
If you are driving, please email your license plate number to firstname.lastname@example.org so that it can be registered to enter CERN premises.