Alternatively, you can take Gilman Drive and turn into the structure at the intersection with Villa La Jolla Dr.
There is no parking fee on weekends. On weekdays, purchase a parking permit from a machine in the structure. Note that there is a maximum of 3 hours parking on weekdays.
From the Gilman Parking Structure, walk to the Price Center (see overhead below). If you get lost or are not sure where you are, just ask someone everybody on campus knows where it is.