From the 5 freeway going towards San Diego get off on Harbor Blvd and go South to Katella. Once at Katella make a left for about a 1/4 mile, which would also be going east towards Angel Stadium. You will arrive at a stop light on a street called Clementine there yow see an entrance on the Right and your there.
Just show the guard your temp pass and park anywhere, I like the second stop on K lot, your the first droped off the cast shuttle.
make sure you make your left from the I5 north bound on the Katella exit. Go past Haster Street (signal light there), you will pass a 7/11 on your right hand side, the next light is Clementine, make a left there, once you drive into the drive way and security guard will check your id if you have one, if you do not tell them you are doing your on the job training. Just park where you can find a spot and there are 3 shuttle picks up points within the lot. Good luck with your training.