Come to the INI foyer to pick up your badge. The introductory talks will take place in the lecture hall Y35 F51, one floor down and under the "rock desert" outside INI.
From the main station (Zürich HB) take tram number 10 (not the S10 train) from the tram stop called "Zürich, Bahnhofplatz/HB" in the direction of the airport (Flughafen) and get out at "Zürich, Universität Irchel" (14 min -- see public transportation).
From there, follow the arrow to "Universität" through the park and you will end up on a broad walkway rising up steps through the center of the campus.
From the fountain, enter the UZH buildings at the entrance to the left of the fountain, then head to the left and ahead towards building Y55. The lunch will take place in the foyer of building 55, level G, the entrance to the Inst. of Neuroinformatics.
Watch the animation below to see how to get to INI.