To learn how to setup and trim the rotor head, you must fist understand what's CCPM and how it cause the heli to lift and fly. I think where are great video on you tube you can research on and helps you. Watch some of the ccpm setups on trex 450 se v2 and understand it. All CCPM rotor head follows the same principle just different alignments of the push rods and swashplate setups.

Andy