The main conference will be held at Sheraton Columbus Hotel at Capitol Square, located at 75 East State Street Columbus, Ohio 43215. The hotel web site has detailed information about transportation options. If you drive to the hotel, here is the directions.
The workshops will take place in the Ohio Union as planned. Morning and afternoon sessions are: 8:00-11:30, break for lunch, 12:30-16:00. Transportation between the conference hotel (Sheraton Columbus Hotel at Capitol Square) and the Union will be provided in the morning and afternoon. Chartered buses will be at the Sheraton starting at 7am. They'll make two trips to the Ohio Union, with the second trip leaving the hotel sometime between 7:30 and 8. Chartered afternoon buses will be at the Ohio Union starting at 4pm. They'll make two trips to the Sheraton, the second trip leaving the Union sometime between 4:30 and 5. This should make sure everyone can get back in time for the opening reception. For those traveling outside those times they can take the public transit (COTA) bus system and ride on the #2 bus that runs North-South on High Street with 5-10 minute intervals all day. The Union is right by a bus stop and the hotel is just a short walk from the same bus line. One-way fare is $2 (exact change).
Parking for workshop participants: You can use the parking garage north to the Ohio Union. Here is a map link for the Union (building #161) and the garage (building 162): http://www.osu.edu/map/area08.php?area=oval, both at the bottom (East) of the map.
A #2 COTA bus stops across the street of the Ohio Unoin.
A COTA bus stop in front of the Ohio Unoin.