From the airport, you can arrange a ride to 2431 W. La Palma Ave. Anaheim CA 92801. Once you arrive at the LSM campus, follow signs labeled "Full-time Training" to arrive at the FTTA Training Center Building.
If you are traveling as an individual, you can arrange a direct shuttle at shuttletolax.com or shuttlefare.com.
If you are traveling in a group, it may be cheaper to book a ride through a rideshare app (e.g. Uber, Lyft).