Just read the first section of the manual and pay attention to the instructions taped to the playfield glass. Even though your dolly isn't for appliances, it will work. I would make sure to have some cheap harbor freight straps to strap whatever you're moving to the dolly. Take your time and you'll be fine.
http://support.jerseyjackpinball.com/downloads/woz/Wizard_of_Oz_Manual_2_2_Oct_2013.pdf